This matters because the questions asked at assessment are usually the restriction ones, so a binge pattern can sit unnoticed for years. If you recognise yourself in eating fast, in secret, past comfort, and then feeling wretched about it, that is a thing with a name and a treatment rather than a personal failing. Both patterns can occur in the same person, so the point is which to ask about first, not which to rule out.

The food colouring trials are the standard example. Around 150 children each received drinks containing a preservative plus one of two dye mixes, or a placebo, with the order varied and everyone blinded. Hyperactivity rose in the general population of children tested, which is not the same as saying dyes cause ADHD. Holding that distinction is what keeps you from either dismissing the finding or inflating it.

Nine artificial colours are approved in the US, and the volume approved for use rose roughly fivefold between 1950 and 2012. One of them, Red No. 3, was withdrawn over health concerns. The practical use of knowing this is not outrage. It is that alternatives already exist, so cutting down means looking for products made without them rather than hunting for something exotic.

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 acted on. The damage is real though: money spent, and a child's diet narrowed for no reason. If you want testing, ask your GP which test actually answers the question you have.

One child's attention and mood went back to her usual level once berries came out of her diet, and what made that findable was the rash and the sore throat rather than the behaviour. So if there are visible signs, follow them. If there are none, a food is unlikely to be the hidden explanation and there are usually more useful places to look.

In one study of 1,140 children, 94% had detectable pesticide in their urine, and ADHD was about twice as common among those with higher organophosphate levels. That sounds alarming until you notice that having less money predicts both the higher levels and the diagnosis. Organic food has not been shown to carry extra nutrients either. If you want to prioritise, buy organic for the few items that carry the most residue and let the rest go.

If money is the constraint, say it out loud rather than nodding along and then failing quietly at home. The advice can be rebuilt around what is actually possible: frozen vegetables, tinned fish, dried pulses, and the outer edges of the shop where the cheaper fresh things sit. Half a recommendation that gets kept beats a whole one abandoned in week two.

People underestimate this, partly because it feels embarrassing and partly because a large takeaway cup is often two or three servings. Count across three ordinary days rather than guessing, and include the evening ones. Nobody needs telling off about the total. It simply changes what everything else means.

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 unremarkable. It matters for safety too, since in a person without ADHD a dose can push things too far. Insects crawling under the skin, or hearing things that are not there, means ring the prescriber that day rather than pushing on.

Roughly a third of people follow a prescription exactly as it is written, and keeping to a diet or an activity plan goes worse than that. Which means a modest change you keep beats an excellent one you abandon by the end of the month. Choose on that basis, and treat a plan that lasted three days as information about the plan rather than a verdict on you.

One change, small enough to be almost boring, kept for a month. Then another. It feels slow while you are in it, and it is the version that tends to still be there a year later. Each one you keep also quietly rebuilds the belief that you can do this, which is the fuel for the next one.

The health food shop route usually starts with a self diagnosis, and that first step is the one worth slowing down. St John's wort will do nothing for a vitamin D deficiency that is showing up as low mood, whatever it does for depression. Get the question right, then argue about the answer. It matters for safety too, since several supplements interfere with prescribed medication.

Most people assume the opposite, that anything on a pharmacy shelf has been through some kind of approval. Regulators here generally act only once a problem has surfaced. So the confidence of the packaging tells you about the marketing and nothing about the contents, which is worth knowing before you spend rather than after.

The obvious problem is paying for something you did not get. The quieter problem is the undeclared filler, which matters a great deal if you avoid wheat or soy for medical reasons, and matters in a different way if you care about what a capsule is made from. Testing the actual contents rather than the paperwork is the only way any of this comes to light.

One study of this kind is a story about some bad batches. Two independent studies finding the same thing is a description of how the market works. That changes what you do with the information. It is not avoid this brand, it is assume nothing about any product that has not been independently tested.

Those schemes test identity, strength, purity and how a product was made, and manufacturers pay to take part voluntarily. There are different tiers, so it is worth reading what a particular mark covers rather than treating every seal as equivalent. A pharmacist is a good person to ask, and it is a two minute question at the counter.

It speeds up the way the liver clears certain drugs, so the pill is not the only thing affected. Warfarin, some HIV medicines, ciclosporin and a number of antidepressants are on the same list, and combining it with an SSRI carries a risk of its own. None of that makes it useless. It does mean it is a medicine in every sense that counts and needs treating as one.

This is often why a supplement looks like it caused a relapse or a sudden run of side effects. Nothing about the prescription changed, so the pattern is easy to misread. If something you take regularly suddenly stops working, or starts feeling too strong, one of the questions worth asking is what has recently arrived in the cupboard.

Kava has been restricted or banned in several countries over liver harm, which tells you how seriously that risk is taken. Yohimbe is a poor choice for anyone anxious, which is often exactly the person reaching for it. And if you are already taking something sedating, or drinking, kava is the wrong companion for either.

Both halves of that need saying. No evidence is not proof of no effect, and it is also not permission to assume one. It leaves you with an open question, which is an uncomfortable but honest place to stand. Marketing tends to fill that gap with a confidence it has not earned, which is why the same sentence gets used to sell things.

That last part is worth sitting with, because it is what usually happens. An early promising effect shrinks as trials get bigger and better controlled, and the honest conclusion moves with it. None of this is a reason to write the whole category off. It is a reason to ask which one, for what, and alongside what else, rather than treating natural as a single thing that either works or does not.

That is a short list on purpose. Nearly all the harm in this area comes from an interaction nobody knew about or a product that was not what it claimed to be, and both are avoidable before you swallow anything. Beyond those two, whether a particular herb helps you is a fair thing to try and find out. Nobody has to give up on the idea to be sensible about it.

Money spent here is money not spent elsewhere, and often the alternative is a treatment that is covered and has been tested. Nobody is telling you how to spend what is yours. Just make it a real comparison: this bottle every month against whatever else that would pay for, and how confident you actually are in the contents.

This is not a claim that you can think yourself well or ill. It is closer to saying the body keeps a tally. If you have been carrying something heavy for months and you also keep picking up every bug going, those two facts may not be unrelated. Finding some way to let the feeling out, in words or with someone safe, is body care as much as mind care.

It can feel almost insulting to be asked about breakfast when what you carry is so much bigger than breakfast. But a body short of sleep and short of food has a narrower margin before hard feelings tip into overwhelm, and hard feelings are exactly what you are trying to face. Sorting one basic thing is not avoidance of the real work. It is often what makes the real work survivable.

A plan you cannot keep does more than fail. It quietly adds to the pile of evidence that nothing you do makes any difference, and that pile is heavy enough already. So aim at one thing you can carry with you, literally if need be. Something done imperfectly most days beats something ideal that never starts.

Digestion mostly happens when your body believes it is safe. If you eat every meal with your shoulders up round your ears, that alone can show up as cramping, bloating or a stomach that never quite settles. Food reactions then add their own load on top. Which is why slowing the meal down and questioning the food often need to happen together.

This works in both directions. It stops you treating a body complaint as something random that landed on you, and it stops you treating it as a character flaw. Long strain leaves marks. Knowing a symptom has a history is usually a relief rather than a burden, and it changes what you go looking for next.

People who have been disbelieved by doctors are very sensitive to this, and with reason. The choice usually gets offered as either it was all in your head or you are permanently broken, and most real stories sit somewhere between. Try describing what changed and what did not, rather than reaching for a verdict. That leaves room for the difficulty to still show up on a bad week without it meaning nothing has moved.

Fog sits where several things overlap: dissociation, anxiety, poor sleep, thyroid and iron problems, infections, medication. Because it belongs neatly to no one specialty, people get passed along and eventually stop mentioning it. Say it anyway, and say how long it has been going on for. Being told it is real is worth something in itself if you have been quietly assuming you were making it up.