Vegetables are the food of the earth; fruit seems more the food of the heavens. ~ Sepal Felicivant
The 3 basic energy nutrients – carbohydrate, fat, and protein – are most wholesomely found in natural foods. The healthiest diet comprises mostly fruit and vegetables: high in natural sugars and carbohydrates, with modest amounts of more intensive vegetarian protein, and lipids from seed sources (and avocado).
Almost as important as what is selected is choosing to eat as little as possible. If you are past adolescence and gaining weight you are eating too much.
A low-carbohydrate diet affects the system within days: resulting in impaired attention span, lowered awareness, slower reflexes, and worse mood. Such a diet quickly begins to impair the body.