Favorite diet could help with weight loss and even life extension —but pitfall

The hottest way to lose weight these days involves eating whatever you want — on some days.

Silicon Valley loves it. One Bay Area group of enthusiasts called WeFast meets weekly to collectively break their fasts with a hearty morning meal. Facebook executive Dan Zigmond confines his eating to the narrow time slot of 9 a.m. to 5:30 p.m., and many other CEOs and tech pioneers are sworn "IF" devotees.
you don't eat at all.
As strange as it sounds, the diet — known as intermittent fasting — has a lot of scientific backing. Large studies have found it to be just as reliable for weight loss as traditional diets; other studies in animals have suggested it could have other benefits as well, such as reducing the risk for certain cancers and even prolonging life.