I'm very thin no matter what or how much I eat, so the whole weight issue is irrelevant to me. But I have tried many special 'health diets' such as vegan, raw vegan, etc, and observed positive effects on physical and mental health. But -
if one swings from one extreme diet, to normality again (or worse still, from 'purge' to 'binge') - that is not healthy for the body. And I tended to oscillate like that, so now I just try to be moderate,
neither eating too much, nor too little. The body likes regularity, and doesn't
If we need to fast sometimes, our body tells us, when we are sick for example we can naturally lose interest in eating. It's good to go with that, drinking water etc and letting the body do it's detox. If we stay away from pharmaceutical drugs, our body usually knows what is best for it, and we can develop a sensitivity to it's needs, ime.