Weight Watchers works for most people. It is the most researched diet, and one of the most successful.
Specialized weight loss plan for women over 40, with innovative low-impact fitness plans.
Affordable and effective diet option, with the new Fresh Start bringing some research backing.
Sometimes called Flexible Dieting, counting macros means all foods are allowed - as long they are within your daily allowance.
Still one of the most popular diets. New editions bring updated research.