I've been on birth control for over a year nd I have gained 20 pounds since I've been on it. I went from a 24 inch waist to a 29 inch waist. I would eat as much as I wanted before nd never gained weight, so I truly believe that the pill did make me gain weight. I'm not happy with it but I need to be on the pill because I get severe cramps.
I don't for one second believe these articles that say the pill causes little or no weight gain. The pill tricks your body into thinking it's pregnant. What happens when you're pregnant? You gain weight!! I have been on and off the pill for the last 20 years. When I first got on the pill, I gained 15 pounds within the first month. I got off the pill 10 years later to have a baby and within the first month of being off the pill, I lost the entire 15 pounds will no effort at all. After having both my kids, I decided to try the IUD, hoping to avoid weight gain. Once again, I gained exactly 15 pounds and after 3 years on the IUD, I developed horrible acne on my face and back. I got the IUD removed and within a month, I was down 15 pounds and my acne completely cleared up. I stayed off all hormonal contraceptives for 6 months. Last November, I gave the pill another try. I am currently taking Lo Loestrin (supposedly the lowest hormonal pill other than the mini pill) and no joke, I gained exactly 15 pounds again. I don't know who these supposed "studies" are conducted on, but I find it odd that every friend I have and every forum I read says that the pill makes them gain weight.
However, be cautious of the Depo-Shot, which is a completely different form of contraception. The Depo-Shot is a hormone injection that lasts for approximately 3 months to prevent pregnancy. Though the injection has synthetic progesterone, it does not have any estrogen. It is usually given in the arm or the rear, delivering a high level of progesterone into the body.
The Depo-Shot is one of the few forms of birth control that causes weight gain in women. A variety of studies have been conducted and the results have varied but in one review of 56 studies showed that anywhere from 25-70% of users gain weight. Of those participants who gained weight, they averaged between 5-10 pounds. The exact cause of weight gain is still unknown, so thus it is labeled as a possible side effect. Remember, this weight gain could be attributed to a variety of factors like diet, frequency of exercise etc.