An excellent site on a subject of a healthy nutrition is:
I certainly would not encourage anyone to purchase any commercial "diet" products or supplements.
For those who are looking for further scientific analysis of dieting and nutrition, please go to...
Please, give a strong consideration to buy this produce organic (to avoid products otherwise highly contaminated with pesticides):
Sweet bell pepper Lettuce
Strawberries Domestic Blueberries
Imported Nectarines Potatoes
Gree beans Kale