Dr. Weil's Anti-Inflammatory Diet follows the belief that certain foods cause or combat inflammation. The goal is optimum mental and physical health, along with disease prevention.

The Flexitarian Diet is for casual vegetarians: Those who don't want to eliminate meat completely, but still want to reap the health benefits associated with vegetarianism.

Changes to diet, weight and activity can help you get pregnant. This easy to follow 10-step approach to improving fertility has a use-at-your-own-pace style.

Weight Watchers is an effective diet. Among its pros: An emphasis on group support, lots of fruits and veggies, and room for occasional indulgences.

Volumetrics is all about getting more mileage out of what you eat. Trade high-density foods for low-density foods and choose foods that fight hunger.

Therapeutic Lifestyle Changes, or TLC, is a very solid diet plan created by the National Institutes of Health.

The Mayo Clinic diet plan focuses on lifelong healthy eating. It's rated high in nutrition, safety and diabetes, but only moderately effective for weight loss.

The MIND Diet takes two proven diets - DASH and Mediterranean - and zeroes in on the foods in each that specifically affect brain health.

The Flexitarian Diet is for casual vegetarians: Those who don't want to eliminate meat completely, but still want to reap the health benefits associated with vegetarianism.