"Diet" simply means "what you eat"!  Sites in this ring might give professional information, advice, products or personal accounts of DIETARY experiences pertaining to weight loss, weight gain, following "diets" (that is, programs designed to cause or promote weight loss or gain, or to cure or control diseases or disorders) or nutrition in general.  Pictured:  a photo taken by Nancy Grebb (but in the public domain) asserting on behalf of the USDA, via its caption, that "A diet rich in soy and whey protein, found in products such as soy milk and low-fat yogurt, has been shown to reduce breast cancer incidence in rats."