Luckily you can create a Venn-Diagram and arrive at something pretty universal. First understand three things: 1) People are very different; genetics, microbi

Luckily you can create a Venn-Diagram and arrive at something pretty universal. First understand three things: 1) People are very different; genetics, microbiome, allergies and daily habits makes different diets great for different people. We are talking diets as different as super high fat keto, compared to high carb vegan that can probably all be great. 2) Most people thrive with the mysterious 80-20 rule, meaning don't go overboard unless of course trying to achieve something like Keto or are allergic. Most people do not need "very dogmatic" diets. 3) Diets are linked to lifestyle, microbiome, social setting and other factors that we are only beginning to understand, so don't look at anything in isolation. Then look at the universals: - Don't bomb your system with high amounts of simple carbohydrates too quickly, unless very active or in a fasted state. It will wreck your insulin system. - Don't eat to much processed foods, they are always way lower in nutrients, and if fortified, still missing phytonutrients and often contains too much sugar etc. - Eat a varied diet and cherish high density nutrient foods like dark leafy greens and offal. Lots of foods today have less nutrients because of horrible soil quality. - Learn to listen to your body also foods are somewhat psychoactive if you start listening to the queues. Try an elimination diet if having problems, otherwise adjusting these things are often key: Dairy, Fats, Carbs, Caffeine, Fiber, Meat and more contested; classes of greens like nightshade, organic / non pesticide, raw vs cooked. - Try fasting or just eating at different times of the day or skipping meals. - Lots of people are Vitamin D deficient, and supplementng is easy. Omega3/6 ratio is also out of whack in most people but this is harder to fix. - Keep an eye on the field of gut-brain-axis, microbiome etc, there seems to be a revolution around the corner, and its a key to understand everything from mood disorders to skin problems, weight loss and autoimmune diseases. But we aren't a place where there is hard data on "what to do" besides fecal transplants.