Gender Based

All friends and acquaintances I meet these days comment on my appearance. They generally say, "you have lost a lot of weight" (no, really, I HAD lost a fair bit but gained it right back, for the most part). But the difference is, women say it wistfully, almost as if wishing they were in my shoes. The men say it with shock, and absolutely no such wish. Makes you wonder, is it genuinely so much harder for women to lose weight than men? Empirical evidence definitely seems to say yes!