I've never heard of that, the breastfeeding and having trouble losing weight. This thing, though, she's at least 180 lbs and maybe 5'4"? Well, she claims she's 170, so I'm guessing 185. As a side question, do you know if these women mainly pumped? Just wondering if maybe pumping instead of feeding may have an impact on hormone levels and making it more difficult to lose (for humans not whales).