That's what I've read. What really sucks is that when I was on BCP's in my late teens and early to mid 20's, I always had to watch my weight in order to stay slim. Once I went off of the BCP's, I could eat whatever I wanted and not gain an ounce. I actually started losing weight. I was in heaven. I had to go back on the BCP's after 2 years of being off of them because I had bad acne, started to grow extra hair, spotting between periods, and then finally hair loss. Now that I'm back on BCP's, I have to watch what I eat and still weigh more than when I was off of them. I think that the BCP's definitely made me insulin resistante which led to my gradual weight gain.