Practices

Allergies turn up more often alongside ADHD than chance would predict. Worth mentioning your allergy history at an assessment even when nobody asks, since the two seem to travel together.

The likeliest explanation is not that one causes the other. It is that some of the same underlying wiring makes both more likely in the same person.…

Here is a question that costs nothing: has anyone in your family been told their vitamin D was low? It runs in families through genes, skin tone, where you live and how much time anyone spends outside.

The clinician telling this story found out only afterwards that his mother, father and brother had all been low. Nobody had mentioned it, because it…

Around seven in ten people who use herbal products never mention it to their doctor. Not out of secrecy, mostly because a tea or a gummy does not feel like it belongs on a list of medications.

The useful move is to answer a wider question than the one you were asked. When someone asks what medication you take, tell them what else you take…

Skin prick and IgE blood tests find real allergies. The IgG food sensitivity panels sold direct to families have not been shown to measure sensitivity at all, and they tend to come back with a long list of foods to avoid.

IgG antibodies mostly show that you have eaten something, not that it harms you, which is why the results look alarming and change so little when…

Put an actual number on it: how many coffees, teas, energy drinks and colas in a normal day. Without that number, your sleep problems, your anxiety and how well a medication is working are all being read against an unknown.

People underestimate this, partly because it feels embarrassing and partly because a large takeaway cup is often two or three servings. Count across…

Stimulants sharpen focus in almost anyone, so responding well to one does not confirm you have ADHD. The diagnosis comes from your history and how you function, not from a trial of tablets.

This cuts both ways. Someone can be handed a diagnosis on the strength of a good response, and someone else can be doubted because their response was…

If you are testing whether a food affects you or your child, the test has to be complete. Among children with suspected sensitivity to artificial colouring, most reacted to as little as 100 mg, so a bit left in is enough to blur the answer.

What usually happens is that a family removes the obvious sources, misses the ones hidden in medicines, sauces and cereals, sees no change, and…

If you are going to test whether a food matters, work out in advance where the plan will leak. School lunch swaps, a grandparent's biscuit tin, your own memory on a hard week: all of it decides whether the answer means anything.

Change one thing at a time and keep everything else steady, otherwise you cannot tell which change did what. Then be honest about who is running the…