a new discovery says that ghrelin levels affect ADHD. Ghrelin is released when we are hungry, so eating often may help to lower levels. Ghrelin causes more impulsivity.
I also find that magnesium, calcium, D3, zinc, resveratrol, fish oil, rooibos tea, ginkgo, cold showers.
Gym, Sleep, Sunshine, avoid screens/tv/laptops/phones, and avoid videogames/cartoons
Play a lot of chess, brain training.
People often talk about dopamine/serotonin but that's not really the case. In fact most ADHD have plenty of dopamine, but the "door" is closed, it's not getting released, so using stimulants to mimick dopamine is not helpful in the end. Eating broad beans (fava) is also useless (even though they contain very high amounts of l-dopa)
three foods that seem to help are eggs, peanuts, blueberries, and plenty of fish, meat protein
and to avoid all cereals (glyphosate pesticide) gluten, milk, and artificial colours/additives, alcohol. Nicotine seems to make everything very bad/much worse.