If I had a dollar for every woman that has asked me why do men lose weight faster than women, I'd be tripping over cash.
For the most part, women can lose weight as easily as men. However, each person is unique in his or her ability to burn calories. Your metabolism is determined by a number of things, but it's mainly affected by your body composition (fat to lean mass ratio), and eating and exercise habits.
 The big game changer here is muscle mass. If you haven't noticed, men tend to have more muscle than women. The more muscle you have, the better you become at burning calories.
Also, being a woman (you're gonna hate me for this), your hormones try to keep your body higher in fat for certain biological functions.
