Men have it easier due to their greater percentage muscle mass which results in a higher resting metabolic rate. Unfair, but that's the way it is!
Years ago my mom and dad (both in their 50's) were dieting on the "chicken diet," a restricted carb and calorie diet. Both lost at first, but then my mom stalled. I was visiting, and when she complained to me, my dad said that it must be that she was cheating. She vociferously denied it.
Then, I asked if there were any cookies around, and my mom said that there were boxes of Girl Scout cookies up in the top shelf of the cupboard because they couldn't eat them on the diet. Needless to say, when I looked, all the cookies were gone. My dad sheepishly admitted to sneaking them all. My mom was furious, not that he had cheated, but that he had cheated AND lost weight AND given her a hard time. Not fair!