To improve thyroid function—the gland manages growth and metabolism—look no further than a low-calorie, low-fat hard-boiled egg, suggests registered dietitian Amy Shapiro. If you like spice, drizzle your snack with sriracha sauce. “It contains capsaicin, a compound found in chile peppers that helps burn calories and fat,” says Karen Ansel M.S., coauthor of The Calendar Diet.
