Which Types of Birth Control Cause Weight Gain?

birth control weight gain

Hormonal birth control can negatively affect metabolic health and contribute to weight gain. Some types are more likely to do so than others, depending on the type of progestin.

But before we get to the question of “which progestin,” I’ll just point out that the biggest problem with hormonal birth control is that it (usually) switches off hormones.

How Science Got It Wrong About Progesterone

Progesterone is important for women's health.

Progesterone is important for women’s health. Yet for decades, it has been ignored or wrongly blamed for side effects it doesn’t cause. How did that happen?

A missed opportunity

Progesterone was discovered shortly after estrogen, missing the chance to be included in the simplified narrative of “testosterone for men and estrogen for women.” To complicate things further, progesterone couldn’t initially be made into an oral medication, so it was sidelined in favor of synthetic progestins.

Pain Is Not a Symptom of PCOS

PCOS pain

According to a 2017 study, pain is the most frequently reported symptom of PCOS, even though pain is not a symptom of PCOS.

The solution to this paradox is that both PCOS and period pain are common, so it’s easy to have both a PCOS diagnosis and pelvic pain. But, importantly, the PCOS diagnosis can only explain irregular periods or symptoms of androgen excess (e.g., facial hair). It can’t explain the pain!

Also, PCOS cannot be diagnosed by ultrasound.