'We lost HALF our weight': So how did these women do it? And how are they going to avoid putting it all back on?

The story of how three women lost between 11 and 14 stone in weight, and what they plan to do to keep the weight off in the future.

Vitamins: Are They Really Good For You?

People are grabbing up bottles that claim to promote health and longevity. But new research shows not all vitamins are good -- and some can even be harmful.

12 Investigates: Are juice diets safe

Some are staunch believers in the diet. Others said there needs to be more research on how it affects the body. But is a diet of only juice drinks made from organic fruits and vegetables really healthy?