Sitting for large segments of your day can lead to weight gain, among other side effects. If you’ve recently changed jobs and find yourself sedentary for most of your day, you may begin noticing a gradual weight gain. If you’re noticing weight gain and can’t pinpoint a reason, it could be due to one of the following common causes. If you gain substantially more than that after starting hormonal birth control, your weight gain is likely caused by something else. One literature review found that study participants gained, on average, fewer than 4.4 pounds after 6 or 12 months of using a progestin-only pill. ![]() The vast majority of these studies showed limited evidence that birth control pills are associated with weight gain.Īny weight gain that may occur in the first weeks or months after beginning birth control is typically due to water retention. Study after study has examined the relationship between weight gain and today’s most popular forms of hormonal contraception, including the pill and the patch. Today’s pills only contain 20 to 50 mcg of estrogen, according to a 2012 review. The first birth control pill, developed in the 1950s, contained 150 micrograms (mcg) of the estrogen mestranol. ![]() Most, if not all, pills lack estrogen levels that are high enough to cause weight gain. Changes in hormonal birth control and advances in combination forms of the pill have addressed this issue. ![]() Progestins can increase appetite, while high levels of estrogen tend to increase fluid or water retention. Decades ago, hormonal contraception used hormones at levels much higher than we use today.
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