Slim Challenges

I have a friend who's really skinny even after the birth of her baby. She just can't put on weight in spite of how much she eats and she recently told me that she's so tired of people asking her how she maintains her figure and whether she can recommend any weight loss pills that work! She once got so irritated that she gave the other person a real piece of her mind which I found very surprising as she's usually quite mild-mannered. I never thought that being slim would come with its challenges too!