Growing old, frailty, and care of the elderly.
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وَٱللَّهُ خَلَقَكُمۡ ثُمَّ يَتَوَفَّىٰكُمۡۚ وَمِنكُم مَّن يُرَدُّ إِلَىٰٓ أَرۡذَلِ ٱلۡعُمُرِ لِكَيۡ لَا يَعۡلَمَ بَعۡدَ عِلۡمࣲ شَيۡـًٔاۚ إِنَّ ٱللَّهَ عَلِيمࣱ قَدِيرࣱ
It is God who has created you and in time will cause you to die. Some of you will be reduced, in old age, to a most abject state, so that, after having knowledge, they will know nothing at all: God is truly all knowing and all powerful
۞ٱللَّهُ ٱلَّذِي خَلَقَكُم مِّن ضَعۡفࣲ ثُمَّ جَعَلَ مِنۢ بَعۡدِ ضَعۡفࣲ قُوَّةࣰ ثُمَّ جَعَلَ مِنۢ بَعۡدِ قُوَّةࣲ ضَعۡفࣰ ا وَشَيۡبَةࣰۚ يَخۡلُقُ مَا يَشَآءُۚ وَهُوَ ٱلۡعَلِيمُ ٱلۡقَدِيرُ
It is God who creates you weak, then gives you strength, then weakness after strength, together with your grey hair: He creates what He will; He is the All Knowing, the All Powerful
يَٰٓأَيُّهَا ٱلنَّاسُ إِن كُنتُمۡ فِي رَيۡبࣲ مِّنَ ٱلۡبَعۡثِ فَإِنَّا خَلَقۡنَٰكُم مِّن تُرَابࣲ ثُمَّ مِن نُّطۡفَةࣲ ثُمَّ مِنۡ عَلَقَةࣲ ثُمَّ مِن مُّضۡغَةࣲ مُّخَلَّقَةࣲ وَغَيۡرِ مُخَلَّقَةࣲ لِّنُبَيِّنَ لَكُمۡۚ وَنُقِرُّ فِي ٱلۡأَرۡحَامِ مَا نَشَآءُ إِلَىٰٓ أَجَلࣲ مُّسَمࣰّ ى ثُمَّ نُخۡرِجُكُمۡ طِفۡلࣰ ا ثُمَّ لِتَبۡلُغُوٓاْ أَشُدَّكُمۡۖ وَمِنكُم مَّن يُتَوَفَّىٰ وَمِنكُم مَّن يُرَدُّ إِلَىٰٓ أَرۡذَلِ ٱلۡعُمُرِ لِكَيۡلَا يَعۡلَمَ مِنۢ بَعۡدِ عِلۡمࣲ شَيۡـࣰٔ اۚ وَتَرَى ٱلۡأَرۡضَ هَامِدَةࣰ فَإِذَآ أَنزَلۡنَا عَلَيۡهَا ٱلۡمَآءَ ٱهۡتَزَّتۡ وَرَبَتۡ وَأَنۢبَتَتۡ مِن كُلِّ زَوۡجِۭ بَهِيجࣲ
People, [remember,] if you doubt the Resurrection, that We created you from dust, then a drop of fluid, then a clinging form, then a lump of flesh, both shaped and unshaped: We mean to make Our power clear to you. Whatever We choose We cause to remain in the womb for an appointed time, then We bring you forth as infants and then you grow and reach maturity. Some die young and some are left to live on to such an age that they forget all they once knew. You sometimes see the earth lifeless, yet when We send down water it stirs and swells and produces every kind of joyous growth
ٱلۡحَمۡدُ لِلَّهِ ٱلَّذِي وَهَبَ لِي عَلَى ٱلۡكِبَرِ إِسۡمَٰعِيلَ وَإِسۡحَٰقَۚ إِنَّ رَبِّي لَسَمِيعُ ٱلدُّعَآءِ
Praise be to God, who has granted me Ishmael and Isaac in my old age: my Lord hears all requests
قَالَ أَبَشَّرۡتُمُونِي عَلَىٰٓ أَن مَّسَّنِيَ ٱلۡكِبَرُ فَبِمَ تُبَشِّرُونَ
He said, ‘How can you give me such news when old age has come to me? What sort of news is this?’
أَيَوَدُّ أَحَدُكُمۡ أَن تَكُونَ لَهُۥ جَنَّةࣱ مِّن نَّخِيلࣲ وَأَعۡنَابࣲ تَجۡرِي مِن تَحۡتِهَا ٱلۡأَنۡهَٰرُ لَهُۥ فِيهَا مِن كُلِّ ٱلثَّمَرَٰتِ وَأَصَابَهُ ٱلۡكِبَرُ وَلَهُۥ ذُرِّيَّةࣱ ضُعَفَآءُ فَأَصَابَهَآ إِعۡصَارࣱ فِيهِ نَارࣱ فَٱحۡتَرَقَتۡۗ كَذَٰلِكَ يُبَيِّنُ ٱللَّهُ لَكُمُ ٱلۡأٓيَٰتِ لَعَلَّكُمۡ تَتَفَكَّرُونَ
Would any of you like to have a garden of palm trees and vines, graced with flowing streams and all kinds of produce, which, when you are afflicted with old age and feeble offspring, is struck by a fiery whirlwind and burnt down? In this way God makes His messages clear to you, so that you may reflect on them
Commentary on the verses above, at most two editions per verse.
And God has created you when you were nothing then He takes you in death when your terms of life are concluded; and there are some among you who are relegated to the most abject stage of life that is the most diminished because of old-age and senility so that he knows nothing after having possessed some knowledge. ‘Ikrima said ‘Whoever recites the Qur’ān will not come to such a predicament’. God is Knowing of how to manage the affairs of His creation Powerful in doing what He will.
And Allah created you and then He will cause you to die; and among you there are some who are sent back to senility, so that they know nothing after having known (much). Truly, Allah is Knowing, capable of all things (70) In Man there is a Lesson Allah tells us that He is controlling the affairs of His servants. He is the One Who created them out of nothing, then He will cause them to die. But there are some of them that He allows to grow old, which is a physical weakness, as Allah says: اللَّهُ الَّذِي خَلَقَكُم مِّن ضَعْفٍ ثُمَّ جَعَلَ مِن بَعْدِ ضَعْفٍ قُوَّةً (Allah is He Who created you in (a state of) weakness, then gave you strength after weakness, then after strength gave (you) weakness)(30:54) لِكَيْ لَا يَعْلَمَ بَعْدَ عِلْمٍ شَيْئًا (so that they know nothing after having known.) meaning, after he knew things, he will reach a stage where he knows nothing because of weakn
O people, if you are in doubt about the Uprising, surely We created you of dust, then of a sperm drop, then of a blood clot, then of a lump of flesh, fully created and not fully created, that We might make clear to you. The composition of the Adamic body in the first creation is a clear argument against the deniers of the Uprising. He is saying, “I am the Lord who created a body and figure with such comeliness, a stature and form with such beauty, from that feeble sperm drop in that firm settledness. He says, “Did We not create you of feeble water, then put it in a firm settledness?” [77:20-21]. If you ponder this body, you will find an exemplar of all the created and newly arrived things in the celestial and terrestrial worlds. Just as He arranged the seven spheres in heaven, so also He composed seven parts in this body-water and dust, and then flesh, skin, veins, sinews, and bones. Jus
God is the One Who created you from a state of weakness from a ‘base fluid’ cf. Q. 328 then He ordained after a second weakness which is the weakness of the period of childhood strength that is the strength of youth then after strength He appointed weakness again and grey hair the weakness of old age and the grey hairs of decrepitude read vocalised as du‘f ‘weakness’ in all three places. He creates what He will of weakness and strength youth and grey hairs and He is the Knower of how to manage His creatures the Omnipotent.
Allah is He Who created you in weakness, then gave you strength after weakness, then after strength gave (you) weakness and grey hair. He creates what He wills. And He is the All-Knowing, the All-Powerful (54) The Different Stages of Man Here Allah points out how man passes through different stages of creation, one phase after another. He is originally created from dust, then from a Nutfah, then from a clot, then from a lump of flesh. Then he becomes bones, then the bones are clothed with flesh, then the soul is breathed into him. Then he emerges from his mother's womb, weak and thin and powerless. Then he grows up little by little, until he becomes a child, then he reaches the stage of puberty, then he becomes a young man, which is strength after weakness. Then he starts to get older, reaching middle age, then old age and senility, weakness after strength, so he loses his resolve, pow
O mankind in other words O people of Mecca if you are in doubt about the Resurrection then lo! consider that We have created you that is We have created your origin — Adam — from dust then We created his progeny from a drop a sperm-drop then from a clot congealed blood then from a little lump of flesh mudgha a piece of flesh the size of what one would be able to chew mā yumdagh partly formed shaped complete in form and partly unformed that is uncomplete in form that We may make clear to you the perfect nature of Our power that you might then infer from this initial act of creation the reality of its future restoration. And We establish nuqirru marks a new grammatically independent sentence in the wombs whatever We will for a specified time that is until the time for it to come out then We bring you forth from the bellies of your mothers as infants and then We extend your life that you ma
Sound narrations only, and never matched by text. A narration appears here because a compiler filed it under a chapter this subject maps to, or because someone read it and anchored it. Each row says which.
حَدَّثَنَا آدَمُ بْنُ أَبِي إِيَاسٍ، حَدَّثَنَا شُعْبَةُ، عَنْ عَدِيِّ بْنِ ثَابِتٍ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ يَزِيدَ الأَنْصَارِيَّ، عَنْ أَبِي مَسْعُودٍ الأَنْصَارِيِّ، فَقُلْتُ عَنِ النَّبِيِّ فَقَالَ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِذَا أَنْفَقَ الْمُسْلِمُ نَفَقَةً عَلَى أَهْلِهِ وَهْوَ يَحْتَسِبُهَا، كَانَتْ لَهُ صَدَقَةً ".
Narrated Abu Mas`ud Al-Ansari:The Prophet (ﷺ) said, "When a Muslim spends something on his family intending to receive Allah's reward it is regarded as Sadaqa for him
حَدَّثَنَا إِسْمَاعِيلُ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " قَالَ اللَّهُ أَنْفِقْ يَا ابْنَ آدَمَ أُنْفِقْ عَلَيْكَ ".
Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "Allah said, 'O son of Adam! Spend, and I shall spend on you
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، أَخْبَرَنَا يَحْيَى بْنُ سَعِيدٍ، أَخْبَرَنَا بَهْزُ بْنُ حَكِيمٍ، حَدَّثَنِي أَبِي، عَنْ جَدِّي، قَالَ قُلْتُ يَا رَسُولَ اللَّهِ مَنْ أَبَرُّ قَالَ " أُمَّكَ " . قَالَ قُلْتُ ثُمَّ مَنْ قَالَ " أُمَّكَ " . قَالَ قُلْتُ ثُمَّ مَنْ قَالَ " أُمَّكَ " . قَالَ قُلْتُ ثُمَّ مَنْ قَالَ " ثُمَّ أَبَاكَ ثُمَّ الأَقْرَبَ فَالأَقْرَبَ " . قَالَ وَفِي الْبَابِ عَنْ أَبِي هُرَيْرَةَ وَعَبْدِ اللَّهِ بْنِ عُمَرَ وَعَائِشَةَ وَأَبِي الدَّرْدَاءِ . قَالَ أَبُو عِيسَى وَبَهْزُ بْنُ حَكِيمٍ هُوَ ابْنُ مُعَاوِيَةَ بْنِ حَيْدَةَ الْقُشَيْرِيُّ . وَهَذَا حَدِيثٌ حَسَنٌ . وَقَدْ تَكَلَّمَ شُعْبَةُ فِي بَهْزِ بْنِ حَكِيمٍ وَهُوَ ثِقَةٌ عِنْدَ أَهْلِ الْحَدِيثِ وَرَوَى عَنْهُ مَعْمَرٌ وَالثَّوْرِيُّ وَحَمَّادُ بْنُ سَلَمَةَ وَغَيْرُ وَاحِدٍ مِنَ الأَئِمَّةِ .
Bahz bin Hakim narrated from his father, from his grandfather who said:"I said: 'O Messenger of Allah! Who most deserves(my) reverence?' He said: 'Your mother.'" He said: "I said: 'Then who?' He said: 'Your mother.'" He said: "I said: 'Then who?' He said: 'Your mother.'" He said: "I said: 'Then who?' He said: 'Then your father, then the nearest relatives, then the nearest relatives
حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدٍ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ، عَنِ الْمَسْعُودِيِّ، عَنِ الْوَلِيدِ بْنِ الْعَيْزَارِ، عَنْ أَبِي عَمْرٍو الشَّيْبَانِيِّ، عَنِ ابْنِ مَسْعُودٍ، قَالَ سَأَلْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم فَقُلْتُ يَا رَسُولَ اللَّهِ أَىُّ الأَعْمَالِ أَفْضَلُ قَالَ " الصَّلاَةُ لِمِيقَاتِهَا " . قُلْتُ ثُمَّ مَاذَا يَا رَسُولَ اللَّهِ قَالَ " بِرُّ الْوَالِدَيْنِ " . قُلْتُ ثُمَّ مَاذَا يَا رَسُولَ اللَّهِ قَالَ " الْجِهَادُ فِي سَبِيلِ اللَّهِ " . ثُمَّ سَكَتَ عَنِّي رَسُولُ اللَّهِ صلى الله عليه وسلم وَلَوِ اسْتَزَدْتُهُ لَزَادَنِي . قَالَ أَبُو عِيسَى وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . رَوَاهُ الشَّيْبَانِيُّ وَشُعْبَةُ وَغَيْرُ وَاحِدٍ عَنِ الْوَلِيدِ بْنِ الْعَيْزَارِ وَقَدْ رُوِيَ هَذَا الْحَدِيثُ مِنْ غَيْرِ وَجْهٍ عَنْ أَبِي عَمْرٍو الشَّيْبَانِيِّ عَنِ ابْنِ مَسْعُودٍ . وَأَبُو عَمْرٍو الشَّيْبَانِيُّ اسْمُهُ سَعْدُ بْنُ إِيَاسٍ .
Ibn Mas'ud said:"I asked the Messenger of Allah: 'O Messenger of Allah! Which is the most virtuous of deeds?' He said: 'Salat during its appropriate time.' I said: 'Then what, O Messenger of Allah?' He said: 'Being dutiful to one's parents.' I said: 'Then what, O Messenger of Allah?' He said: 'Jihad in the cause of Allah.' Then the messenger of Allah was silent, and if I had asked him more, he would have told me more
Arabic originals, reached through the subject’s Arabic senses. Interpretive sources, never proof of a ruling.
ورضواني وجنتي امكثوا فيها خالدين مخلدين ثم يقول لأهل النار كم لبثتم في الأرض عدد سنين قالوا لبثنا يوما أو بعض يوم فيقول بئسما اتجرتم في يوم أو بعض يوم سخطي ومعصيتي وناري امكثوا فيها خالدين مخلدين وخرج الحاكم من حديث عبد الجبار بن وهب أنبأنا سعيد بن طارق عن أبيه عن النبي صلى الله عليه وسلم قال نعمت الدار الدنيا لمن تزود منها لآخرته حتى يرضي ربه وبئست الدار لمن صدته عن آخرته وقصرت به عن رضا ربه وإذا قال العبد قبح الله الدنيا قالت الدنيا قبح الله أعصانا لربه وقال صحيح الإسناد وخرجه العقيلي وقال عبد الجبار بن وهب مجهول وحديثه غير محفوظ قال وهذا الكلام يروي عن علي من قوله وقول علي خرجه ابن أبي الدنيا عنه بإسناد فيه نظر أن عليا سمع رجلا يسب الدنيا فقال إنها لدار صدق لمن صدقها ودار عافية لمن فهم عنها ودار غني لمن تزود منها مسجد أحباب الله ومهبط وحيه ومصلى ملائكته ومتجر أوليائه اكتسبوا فيها الرحمة وربحوا فيها الجنة فمن ذا يذم الدنيا وقد آذنت بفراقها ونادت بعيبها نعت نفسها وأهلها فمثلت ببلائها ال
وقال مالك رحمه الله ما كان رجل صادقا في حديثه ولا يكذب إلا متع بعقله ولم يصبه مع الهرم آفة ولا خرف
وأما الفدية فتجب على الحامل والمرضع إذا أفطرتا خوفا على ولديهما لكل يوم مد حنطة لمسكين واحد مع القضاء والشيخ الهرم إذا لم يصم تصدق عن كل يوم مدا
وفي وصية لقمان لابنه يا بني اتق المرأة السوء فإنها تشيبك قبل الشيب واتق شرار النساء فإنهن لا يدعون إلى خير وكن من خيارهن على حذر
النوع الثاني من إزالة الفضلات: أجزاء تحذف، مثل قص الشارب، ونتف الإبط، وحلق العانة، وقص الأظافر. ويكره نتف الشيب، ويستحب خضابه.
فإن بقيت رأيت الشيب راغمة % وفي التفرق ما يقضي من العبر
Peer-reviewed work held with its DOI and abstract, labelled with the study design its publication types report. None of it has been read or assessed, so nothing here may be cited as showing anything. Retracted work is held for the record but never listed; a review that a later version replaced is listed under its replacement and marked.
A randomized study of a multidisciplinary program to intervene on geriatric syndromes in vulnerable older people who live at home (Dutch EASYcare Study).: Background: The effectiveness of community-based geriatric intervention models for vulnerable older adults is controversial. We evaluated a problem-based multidisciplinary intervention targeting vulnerable older adults at home that promised efficacy through better timing and increased commitment of patients and primary care physicians. This study compared the effects of this new model to usual care. Methods: Primary care physicians referred older people for problems with cognition, nutrition, be
Elder abuse: a systematic review of risk factors in community-dwelling elders.: Objective: to undertake a systematic literature review of risk factors for abuse in community-dwelling elders, as a first step towards exploring the clinical utility of a risk factor framework. Search strategy and selection criteria: a search was undertaken using the MEDLINE, CINAHL, EMBASE and PsycINFO databases for articles published in English up to March 2011, to identify original studies with statistically significant risk factors for abuse in community-dwelling elders. Studies concerning s
A Multicomponent Exercise Intervention that Reverses Frailty and Improves Cognition, Emotion, and Social Networking in the Community-Dwelling Frail Elderly: A Randomized Clinical Trial.: Background: Frailty can be an important clinical target to reduce rates of disability. Objective: To ascertain if a supervised-facility multicomponent exercise program (MEP) when performed by frail older persons can reverse frailty and improve functionality; cognitive, emotional, and social networking; as well as biological biomarkers of frailty, when compared with a controlled population that received no training. Design: This is an interventional, controlled, simple randomized study. Researche
Interventions to Reduce Ageism Against Older Adults: A Systematic Review and Meta-Analysis.: Background. Research has found a strong link between ageism, in the form of negative stereotypes, prejudice, and discrimination toward older people, and risks to their physical and mental health. Little is known, however, about the effectiveness of strategies to reduce ageism. Objectives. To assess the relative effects of 3 intervention types designed to reduce ageism among youths and adults-education, intergenerational contact, and combined education and intergenerational contact-by conducting
Factors associated with frailty in older people: an umbrella review.: Background: The number of frail older people is increasing worldwide, and all countries will be confronted with their growing needs for healthcare and social support. The aim of this umbrella review was to summarize the evidence on the factors associated with frailty in older people, using a socioecological approach. Methods: PubMed (MEDLINE), Scopus, Web of Science, ScienceDirect, Hinari (research4life), and the Trip database were systematically searched up to April 2023. Systematic reviews of
Iridescent Life Course: LGBTQ Aging Research and Blueprint for the Future - A Systematic Review.: Background: LGBTQ* (lesbian, gay, bisexual, trans, and queer) older adults are demographically diverse and growing populations. In an earlier 25-year review of the literature on sexual orientation and aging, we identified four waves of research that addressed dispelling negative stereotypes, psychosocial adjustment to aging, identity development, and social and community-based support in the lives of LGBTQ older adults. Objectives: The current review was designed to develop an evidence base for
The age-related changes in cartilage and osteoarthritis.
Osteoarthritis (OA) is closely associated with aging, but its underlying mechanism is unclear. Recent publications were reviewed to elucidate the connection between aging and OA. With increasing OA incidence, more senior people are facing heavy financial and social burdens. Age-related OA pathogenesis is not well understood. Recently, it has been realized that age-related changes in other tissues besides articular cartilage may also contribute to OA development. Many factors including senescence-related secretory phenotypes, chondrocytes' low reactivity to growth factors, mitochondrial dysfunction and oxidative stress, and abnormal accumulation of advanced glycation end products (AGEs) may all play key roles in the pathogenesis of age-related OA. Lately, epigenetic regulation of gene expression was recognized for its impact on age-related OA pathogenesis. Up to now, few studies have been…
matched on Aging (mesh)
Brain development during adolescence: neuroscientific insights into this developmental period.
Background: Adolescence is the phase of life between late childhood and adulthood. Typically, adolescents seek diversion, new experiences, and strong emotions, sometimes putting their health at serious risk. In Germany, for example, 62% of all deaths among persons aged 15 to 20 are due to traumatic injuries. Neuroscientific explanations have been proposed for typical adolescent behavior; with these explanations in mind, one can derive appropriate ways of dealing with adolescents. Method: We selectively review pertinent articles retrieved from the PubMed database about the structural and functional development of the brain in adolescence. Results: New findings in developmental psychology and neuroscience reveal that a fundamental reorganization of the brain takes place in adolescence. In postnatal brain development, the maximum density of gray matter is reached first in the primary sensor…
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Nutrition and health during mid-life: searching for solutions and meeting challenges for the aging population.
Interactions between genetic (genome) and environmental factors (epigenome) operate during a person's entire lifespan. The aging process is associated with several cellular and organic functional alterations that, at the end, cause multi-organic cell failure. Epigenetic mechanisms of aging are modifiable by appropriate preventive actions mediated by sirtuins, caloric input, diet components, adipose tissue-related inflammatory reactions, and physical activity. The Mediterranean lifestyle has been for many millennia a daily habit for people in Western civilizations living around the Mediterranean sea who worked intensively and survived with very few seasonal foods. A high adherence to the traditional Mediterranean diet is associated with low mortality (higher longevity) and reduced risk of developing chronic diseases, including cancer, the metabolic syndrome, depression and cardiovascular …
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Stress and telomere biology: a lifespan perspective.
In the past decade, the growing field of telomere science has opened exciting new avenues for understanding the cellular and molecular substrates of stress and stress-related aging processes over the lifespan. Shorter telomere length is associated with advancing chronological age and also increased disease morbidity and mortality. Emerging studies suggest that stress accelerates the erosion of telomeres from very early in life and possibly even influences the initial (newborn) setting of telomere length. In this review, we highlight recent empirical evidence linking stress and mental illnesses at various times across the lifespan with telomere erosion. We first present findings in the developmental programming of telomere biology linking prenatal stress to newborn and adult telomere length. We then present findings linking exposure to childhood trauma and to certain mental disorders with…
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Coping and depression in old age: a literature review.
Background/aims: The interest in the relation between coping and depression in older persons is growing, but research on the concepts and instruments of coping in relation to depression among older persons is scarce and systematic reviews are lacking. With this background, we wanted to gain a systematic overview of this field by performing a systematic literature search. Methods: A computer-aided search in MEDLINE, CINAHL, PsycINFO, Embase, PubMed and www.salutogenesis.fi was conducted. We systematically searched for studies including coping and depression among persons 60 years of age and above. The included studies were evaluated according to predefined quality criteria. Results: Seventy-five studies, 38 clinical and 37 community settings, were included. Of these, 44 were evaluated to be of higher quality. Studies recruiting samples of older persons with a major depressive disorder, mo…
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Telomere length in epidemiology: a biomarker of aging, age-related disease, both, or neither?
Telomeres are nucleoprotein caps flanking DNA. They are shortened by cell division and oxidative stress and are lengthened by the enzyme telomerase and DNA exchange during mitosis. Short telomeres induce cellular senescence. As an indicator of oxidative stress and senescence (2 processes thought to be fundamental to aging), telomere length is hypothesized to be a biomarker of aging. This hypothesis has been tested for more than a decade with epidemiologic study methods. In cross-sectional studies, researchers have investigated whether leukocyte telomere length (LTL) is associated with demographic, behavioral, and health variables. In prospective studies, baseline LTL has been used to predict mortality and occasionally other adverse health outcomes. Conflicting data have generated heated debate about the value of LTL as a biomarker of overall aging. In this review, we address the epidemio…
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Review: microglia of the aged brain: primed to be activated and resistant to regulation.
Innate immunity within the central nervous system (CNS) is primarily provided by resident microglia. Microglia are pivotal in immune surveillance and also facilitate the co-ordinated responses between the immune system and the brain. For example, microglia interpret and propagate inflammatory signals that are initiated in the periphery. This transient microglial activation helps mount the appropriate physiological and behavioural response following peripheral infection. With normal ageing, however, microglia develop a more inflammatory phenotype. For instance, in several models of ageing there are increased pro-inflammatory cytokines in the brain and increased expression of inflammatory receptors on microglia. This increased inflammatory status of microglia with ageing is referred to as primed, reactive or sensitized. A modest increase in the inflammatory profile of the CNS and altered m…
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Training your brain: Do mental and physical (MAP) training enhance cognition through the process of neurogenesis in the hippocampus?
New neurons are produced each day in the hippocampus through the process of neurogenesis. Both mental and physical training can modify this process by increasing the number of new cells that mature into functional neurons in the adult brain. However, the mechanisms whereby these increases occur are not necessarily the same. Physical activity, especially aerobic exercise greatly increases the number of new neurons that are produced in the hippocampal formation. In contrast, mental training via skill learning increases the numbers that survive, particularly when the training goals are challenging. Both manipulations can increase cognitive performance in the future, some of which are reportedly mediated by the presence of new neurons in the adult hippocampus. Based on these data, we suggest that a combination of mental and physical training, referred to here as MAP training, is more benefic…
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Telomeres and early-life stress: an overview.
The long-term sequelae of adverse early-life experiences have long been a focus in psychiatry, with a historic neurobiological emphasis on physiological systems that are demonstrably stress-responsive, such as the hypothalamic-pituitary-adrenal axis and neuroimmune function. However, there has been increasing recognition in the general medical literature that such sequelae might encompass more pervasive alterations in health status and physiology. Recent findings in telomere biology have suggested a new avenue for exploring the adverse health effects of childhood maltreatment. Telomere length in proliferative tissues declines with cell replication and the effect can be accelerated by such factors as inflammation, oxidative stress, radiation, and toxins. Reduced telomere length, as a proxy for cellular aging, has been associated with numerous chronic somatic diseases that are generally co…
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Non-pharmacological cognitive enhancement.
The term "cognitive enhancement" usually characterizes interventions in humans that aim to improve mental functioning beyond what is necessary to sustain or restore good health. While the current bioethical debate mainly concentrates on pharmaceuticals, according to the given characterization, cognitive enhancement also by non-pharmacological means has to be regarded as enhancement proper. Here we summarize empirical data on approaches using nutrition, physical exercise, sleep, meditation, mnemonic strategies, computer training, and brain stimulation for enhancing cognitive capabilities. Several of these non-pharmacological enhancement strategies seem to be more efficacious compared to currently available pharmaceuticals usually coined as cognitive enhancers. While many ethical arguments of the cognitive enhancement debate apply to both pharmacological and non-pharmacological enhancers, …
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n-3 Polyunsaturated fatty acids in animal models with neuroinflammation.
Neuroinflammation is present in the majority of acute and chronic neurological disorders. Excess or prolonged inflammation in the brain is thought to exacerbate neuronal damage and loss. Identifying modulators of neuroinflammation is an active area of study since it may lead to novel therapies. Omega-3 polyunsaturated fatty acids (n-3 PUFA) are anti-inflammatory in many non-neural tissues; their role in neuroinflammation is less studied. This review summarizes the relationship between n-3 PUFA and brain inflammation in animal models of brain injury and aging. Evidence by and large shows protective effects of n-3 PUFA in models of sickness behavior, stroke, aging, depression, Parkinson's disease, diabetes, and cytokine- and irradiation-induced cognitive impairments. However, rigorous studies that test the direct effects of n-3 PUFA in neuroinflammation in vivo are lacking. Future research…
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Prenatal stress, telomere biology, and fetal programming of health and disease risk.
A substantial body of epidemiological, clinical, cellular, and molecular evidence converges to suggest that conditions during the intrauterine period of life play a critical role in developmental programming to influence subsequent health and susceptibility for common, complex disorders. Elucidation of the biological mechanisms underlying these effects is an area of considerable interest and investigation, and it is important to determine whether these mechanisms are distinct for different health outcomes or whether there are some common underlying pathways that may account for the effects of disparate prenatal and early postnatal conditions on various health and disease risk phenotypes. We propose that telomere biology may represent a common underlying mechanism connecting fetal programming and subsequent health outcomes. It appears that the initial establishment of telomere length and …
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How "reversible" is telomeric aging?
A critical question in human health is the malleability of telomere length. Telomere length, sampled at one point during adult life, is predictive of certain types of cancer and other immune and metabolic-related diseases. We now know from basic studies that the telomere/telomerase maintenance system plays a causal role in accelerating biologic aging and promoting disease processes. One can develop short telomeres for a multitude of reasons. Historical factors such as genetics, prenatal conditions, and early adversity, contribute to adult telomere length; however, current stress and lifestyle are also associated. If these modifiable predictors are causal factors in telomere shortening, there is a tremendous opportunity to improve maintenance and possibly even lengthen telomeres with behavioral interventions. This minireview discusses our current understanding of telomere lengthening and …
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The role of dietary polyphenols on adult hippocampal neurogenesis: molecular mechanisms and behavioural effects on depression and anxiety.
Although it has been long believed that new neurons were only generated during development, there is now growing evidence indicating that at least two regions in the brain are capable of continuously generating functional neurons: the subventricular zone and the dentate gyrus of the hippocampus. Adult hippocampal neurogenesis (AHN) is a widely observed phenomenon verified in different adult mammalian species including humans. Factors such as environmental enrichment, voluntary exercise, and diet have been linked to increased levels of AHN. Conversely, aging, stress, anxiety and depression have been suggested to hinder it. However, the mechanisms underlying these effects are still unclear and yet to be determined. In this paper, we discuss some recent findings addressing the effects of different dietary polyphenols on hippocampal cell proliferation and differentiation, models of anxiety, …
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Angiotensin II AT(1) receptor blockers as treatments for inflammatory brain disorders.
The effects of brain AngII (angiotensin II) depend on AT(1) receptor (AngII type 1 receptor) stimulation and include regulation of cerebrovascular flow, autonomic and hormonal systems, stress, innate immune response and behaviour. Excessive brain AT(1) receptor activity associates with hypertension and heart failure, brain ischaemia, abnormal stress responses, blood-brain barrier breakdown and inflammation. These are risk factors leading to neuronal injury, the incidence and progression of neurodegerative, mood and traumatic brain disorders, and cognitive decline. In rodents, ARBs (AT(1) receptor blockers) ameliorate stress-induced disorders, anxiety and depression, protect cerebral blood flow during stroke, decrease brain inflammation and amyloid-β neurotoxicity and reduce traumatic brain injury. Direct anti-inflammatory protective effects, demonstrated in cultured microglia, cerebrovas…
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Telomere length and cardiovascular aging.
Telomeres are located at the end of chromosomes. They are composed of repetitive TTAGGG tandem repeats and associated proteins of crucial importance for telomere function. Telomeric DNA is shortened by each cell division until a critical length is achieved and the cell enters senescence and eventually apoptosis. Telomeres are therefore considered a 'biological clock' of the cell. Telomerase adds nucleotides to telomeric DNA thereby contributing to telomere maintenance, genomic stability, functions, and proliferative capacity of the cell. In certain rare forms of progeria, point mutations within the telomere lead to accelerated telomere attrition and premature aging. Endogenous factors causing telomere shortening are aging, inflammation, and oxidative stress. Leukocyte telomere length (LTL) shortening is inhibited by estrogen and endogenous antioxidants. Accelerated telomere attrition is …
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Abnormal lung aging in chronic obstructive pulmonary disease and idiopathic pulmonary fibrosis.
Aging is a natural process characterized by progressive functional impairment and reduced capacity to respond appropriately to environmental stimuli and injury. The incidence of two common chronic respiratory diseases (chronic obstructive pulmonary disease [COPD] and idiopathic pulmonary fibrosis [IPF]) increases with advanced age. It is plausible, therefore, that abnormal regulation of the mechanisms of normal aging may contribute to the pathobiology of both COPD and IPF. This review discusses the available evidence supporting a number of aging mechanisms, including oxidative stress, telomere length regulation, cellular and immunosenescence, as well as changes in a number of antiaging molecules and the extracellular matrix, which are abnormal in COPD and/or IPF. A better understanding of these abnormalities may help in the design of novel and better therapeutic interventions for these p…
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The link between child abuse and psychopathology: a review of neurobiological and genetic research.
Childhood abuse is associated with later psychopathology, including conduct disorder, antisocial personality disorder, anxiety and depression as well as a heightened risk of health and social problems. However, the neurobiological mechanisms by which childhood adversity increases vulnerability to psychopathology remain poorly understood. There is likely to be a complex interaction between environmental experiences (such as abuse) and individual differences in risk versus protective genes, which influences the neurobiological circuitry underpinning psychological and emotional development. Neuroendocrine studies indicate an association between early adversity and atypical development of the hypothalamic-pituitary-adrenal (HPA) axis stress response, which may predispose to psychiatric vulnerability in adulthood. Brain imaging research in children and adults is providing evidence of several …
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Sex differences and sex steroids in lung health and disease.
Sex differences in the biology of different organ systems and the influence of sex hormones in modulating health and disease are increasingly relevant in clinical and research areas. Although work has focused on sex differences and sex hormones in cardiovascular, musculoskeletal, and neuronal systems, there is now increasing clinical evidence for sex differences in incidence, morbidity, and mortality of lung diseases including allergic diseases (such as asthma), chronic obstructive pulmonary disease, pulmonary fibrosis, lung cancer, as well as pulmonary hypertension. Whether such differences are inherent and/or whether sex steroids play a role in modulating these differences is currently under investigation. The purpose of this review is to define sex differences in lung structure/function under normal and specific disease states, with exploration of whether and how sex hormone signaling…
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Memory encoding and aging: a neurocognitive perspective.
This review article surveys the evidence for age-related changes in memory from cognitive and neuroimaging studies. It is probable that the observed declines in episodic memory with increasing age are a consequence of impairments in both acquisition (encoding) and retrieval - possibly for similar reasons - but the present review focuses on the former set of processes. An additional emphasis is on a processing approach to understanding age-related encoding deficiencies; we suggest that many problems stem from a decline in the ability to self-initiate deeper semantic processing operations. The article briefly discusses the role of declining sensory and perceptual abilities, but focuses primarily on the nature of processing resources, their consequences for memory acquisition, and on age-related changes in cognition and neural functioning. We also survey the evidence for neuroplasticity in …
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Zinc and human health: an update.
The importance of micronutrients in health and nutrition is undisputable, and among them, zinc is an essential element whose significance to health is increasingly appreciated and whose deficiency may play an important role in the appearance of diseases. Zinc is one of the most important trace elements in the organism, with three major biological roles, as catalyst, structural, and regulatory ion. Zinc-binding motifs are found in many proteins encoded by the human genome physiologically, and free zinc is mainly regulated at the single-cell level. Zinc has critical effect in homeostasis, in immune function, in oxidative stress, in apoptosis, and in aging, and significant disorders of great public health interest are associated with zinc deficiency. In many chronic diseases, including atherosclerosis, several malignancies, neurological disorders, autoimmune diseases, aging, age-related deg…
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Adverse childhood experiences, allostasis, allostatic load, and age-related disease.
How do adverse childhood experiences get 'under the skin' and influence health outcomes through the life-course? Research reviewed here suggests that adverse childhood experiences are associated with changes in biological systems responsible for maintaining physiological stability through environmental changes, or allostasis. Children exposed to maltreatment showed smaller volume of the prefrontal cortex, greater activation of the HPA axis, and elevation in inflammation levels compared to non-maltreated children. Adults with a history of childhood maltreatment showed smaller volume of the prefrontal cortex and hippocampus, greater activation of the HPA axis, and elevation in inflammation levels compared to non-maltreated individuals. Despite the clear limitations in making longitudinal claims from cross-sectional studies, work so far suggests that adverse childhood experiences are associ…
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An evolutionary review of human telomere biology: the thrifty telomere hypothesis and notes on potential adaptive paternal effects.
Telomeres, repetitive DNA sequences found at the ends of linear chromosomes, play a role in regulating cellular proliferation, and shorten with increasing age in proliferating human tissues. The rate of age-related shortening of telomeres is highest early in life and decreases with age. Shortened telomeres are thought to limit the proliferation of cells and are associated with increased morbidity and mortality. Although natural selection is widely assumed to operate against long telomeres because they entail increased cancer risk, the evidence for this is mixed. Instead, here it is proposed that telomere length is primarily limited by energetic constraints. Cell proliferation is energetically expensive, so shorter telomeres should lead to a thrifty phenotype. Shorter telomeres are proposed to restrain adaptive immunity as an energy saving mechanism. Such a limited immune system, however,…
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Telomere/telomerase dynamics within the human immune system: effect of chronic infection and stress.
Aging of the immune system is a major factor responsible for the increased severity of infections, reduced responses to vaccines, and higher cancer incidence in the elderly. A major category of stressors that contribute to the alterations within the T lymphocyte compartment is the family of herpes viruses. These viruses, usually acquired early in life, persist for many decades and drive certain T cells to the end stage of replicative senescence, which is characterized by a variety of phenotypic and functional changes, including altered cytokine profile, resistance to apoptosis, and shortened telomeres. Indeed, high proportions of senescent CD8 (cytotoxic) T lymphocytess are associated with latent cytomegalovirus (CMV) infection in the elderly, and are part of a cluster of immune biomarkers that are associated with early mortality. Similar cells accumulate at younger ages in persons chron…
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Telomere length is a biomarker of cumulative oxidative stress, biologic age, and an independent predictor of survival and therapeutic treatment requirement associated with smoking behavior.
Globally, tobacco use is associated with 5 million deaths per annum and is regarded as one of the leading causes of premature death. Major chronic disorders associated with smoking include cardiovascular diseases, several types of cancer, and chronic obstructive pulmonary disease (lung problems). Cigarette smoking (CS) generates a cumulative oxidative stress, which may contribute to the pathogenesis of chronic diseases. Mainstream and side stream gas-phase smoke each have about the same concentration of reactive free radical species, about 1 × 10(16) radicals per cigarette (or 5 × 10(14) per puff). This effect is critical in understanding the biologic effects of smoke. Several lines of evidence suggest that cigarette smoke constituents can directly activate vascular reactive oxygen species production. In this work we present multiple evidence that CS provide the important risk factors in…
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