A picture may be worth a thousand words, but when it comes to weight loss, photos can only tell us so much. Yes, you may think you’re seeing someone transformed to a “healthy weight,” but unless you’re their doctor, you don’t really know what’s happening behind the scenes, and can only speculate. We’re so conditioned to believing that a lower weight is automatically a better one that, especially in summer swimsuit season, we heap praise on those who’ve dropped pounds without knowing how they went about it.