Generally people conflate health and weight because globally, for a very large number of people, this is the main problem. As societies move to western diets, t

Generally people conflate health and weight because globally, for a very large number of people, this is the main problem. As societies move to western diets, the average person becomes overweight and is diagnosed with one or more health problems directly related to obesity (pick one or more from my list above). This is the easy problem to diagnose. The connection between nutrition and health, if obesity is not your concern, seems indeed to be far more nuanced and complex. I'm not sure if anyone has come up with anything better that every expert could agree on except "eat little bit of everything". I suppose fasting seems to improve biological markers even for non-obese people so it's not only about weight loss as such, though.