Grains -- Wheat, barley, oats, rye and spelt cause mild depression and psychosis. Yeast causes skin infection. These combined, rule out all bread. Maize, rice and maybe teff seem ok so far.

Meats, red and white, feel like falling into a coma for hours after consumption, simply for being so tough to digest. In contrast, plant foods give an energetic feeling -- there's no immobilizing digestion period.

Milk and cream products cause a kind of.. tension in my head. Like a silent headache. I feel much clearer not consuming these. Includes organic and lactose-free varieties. Experiments on cheese still ongoing.

Sugar appears harmless, but I've noticed it eats a significant portion of my food budget if I permit myself to buy any. Super addictive. Hard pass all food that contain any added sugar whatsoever. It's a food industry dark pattern designed to make you crave their product. Can get rid of sugar addiction by substituting it entirely for honey.

Similar to sugar, I vehemently avoid all food products containing any artificial flavorings and additives whatsoever. These are designed to fool your body into thinking you're eating something you're not. Some of them are downright dangerous -- sodium laureth sulfate, an additive to toothpaste that makes it foam, causes lacerations in the mouth. After I switched to a toothpaste without it, all spontaneous wounds of the mouth stopped appearing completely.

Of course, the effects of diet is very sensitive to your gut microbial environment. If you're used to eating certain things, their effects are... hidden, at least, if not lessened. And it takes time to adjust, time to experiment.

How I perform my food experiments: I eat the same thing for a month, almost to exclusion of everything else, to see how it makes me feel. I stop eating something completely for months, to see how going without it makes me feel; then see what happens when I do eat it again periodically.