I once ate nothing but grapefruit for an entire month. I didn't lose a pound.
Primates need good nutrition, to begin with. Not only fruits and plants, but insects as well.
I try to eat fruit and be healthy.
I normally eat everything under the sun, but once a year, for a whole month, I eat nothing but fruits, vegetables, nuts, and lean fish, and I feel great!
Dried fruit is a huge part of my diet. Mango, persimmon, banana.
God gave our first parents the food He designed that the race should eat. It was contrary to His plan to have the life of any creature taken. There was to be no death in Eden. The fruit of the trees in the garden was the food man's wants required.
Make one day a mono-meal. This means, choose just one fruit and have it as much as you want. Apples, pears, or anything in season are great for mono-meals.