As Salatin explains it, an egg is an all-natural, nutrition-packed powerhouse in its own small, medium, large, or extra-large package. Organic eggs, which might cost $4 a dozen, make for an inexpensive food that can be effortlessly transformed into a low-calorie meal. Much like a multivitamin, one egg contains 13 essential vitamins and minerals. An egg also includes the bonus of sporting 6 grams of high-quality protein, B vitamins, zinc, and two nutrients—lutein and zeaxanthin—that have been shown to benefit eye health.
Although eggs once were considered to be a source of high blood cholesterol, current research indicates that the unsaturated fats and nutrients in eggs may actually reduce the risk of heart disease. The Duke Diet & Fitness Center in Durham, North Carolina, includes eggs on its list of power foods with the advice that people with high cholesterol should limit egg consumption to four a week.