Depo-Provera and Weight Gain
Depo-Provera is the birth control "shot" — an injection of the progestin medroxyprogesterone acetate given every three months. Unlike the pill or the IUD, the shot is the contraceptive method most consistently linked to weight gain. The balanced answer: weight gain is a recognized side effect of Depo-Provera, more so than for other methods, though it does not affect everyone equally. Here is what the references actually say.
The short answer
Yes, Depo-Provera is associated with weight gain more clearly than other birth control methods. Weight gain is listed in the product information as a common side effect, and research consistently links the shot to gains for many users. It is not guaranteed, and the amount varies widely — some users gain noticeably, others little or nothing. MedlinePlus and ACOG both note weight gain as a recognized effect of the injection.
What the evidence shows
Studies of Depo-Provera, summarized by ACOG and major references, report that weight gain is more common and more pronounced with the shot than with other hormonal methods. The product information lists weight increase among common side effects. Early weight change in the first months may be a predictor for some users, which is one reason providers often monitor weight after starting the injection.
How much weight are we talking about?
For users who do gain, references describe gains that can be more noticeable than with other methods — on the order of several pounds over the first year for many, with substantial individual variation. Some users gain considerably more, while others see little change. Because the range is wide, your own multi-week trend matters more than an average.
Why the shot is different from other methods
- Systemic progestin. The injection delivers a higher, whole-body dose of progestin than the locally acting hormonal IUD, which may influence appetite and metabolism.
- Appetite effects. Some users report increased appetite on the shot, contributing to higher intake.
- Long-acting dosing. Each injection lasts three months, so effects build over time rather than being adjusted day to day.
Who is more likely to gain
Research suggests early weight gain in the first months may predict more gain for some users, and individual sensitivity varies. None of this is a reason to skip a scheduled injection on your own — these are factors for your provider to weigh with you when choosing or continuing a method.
Depo-Provera vs the pill, IUD, and implant
The shot is the method most consistently linked to weight gain. By contrast, the combined pill, the hormonal IUD (Mirena), and the implant (Nexplanon) show much weaker or no evidence of significant gain. See our birth control and weight gain overview for the full method-by-method comparison.
What to do if you're concerned
- Track the trend. Weigh under consistent conditions over weeks, and note changes after each injection.
- Support balanced habits. Mindful eating and regular activity help offset appetite-related gain.
- Discuss alternatives. If weight gain is significant or bothers you, talk to your provider about lower-risk methods.
- Plan any switch. Don't stop a method abruptly without a contraception plan, to avoid unintended pregnancy.
For intentional healthy weight goals, our calorie calculator can help you understand your numbers.
When to see your doctor
Contact your provider for significant or rapid weight change, bothersome symptoms, or any warning signs in the product information. The shot also has other considerations (such as effects on bone density with long-term use) that your provider discusses with you.
Frequently asked questions
- Does Depo-Provera cause weight gain?
- Yes, more clearly than other birth control methods. Weight gain is a recognized, common side effect of the shot, though it doesn't affect everyone and the amount varies widely. Report meaningful change to your provider.
- How much weight do people gain on the Depo shot?
- There is no single number. For users who gain, references describe gains that can be more noticeable than with other methods — often several pounds over the first year for many, with wide variation. Some gain more, some little.
- Why does the shot cause more weight gain than the pill?
- The injection delivers a higher, whole-body dose of progestin than the locally acting IUD, and some users report increased appetite. The pill, IUD, and implant show much weaker or no evidence of significant gain.
- Will I lose the weight after stopping Depo-Provera?
- It varies. Some users find weight stabilizes or eases after switching methods, but results differ. Don't stop without a contraception plan; discuss alternatives with your provider.
- Which birth control is least likely to cause weight gain?
- The non-hormonal copper IUD has no hormonal weight effect. Among hormonal options, the pill, hormonal IUD, and implant lack strong evidence of significant gain, unlike the shot.
Related guides
References
Sources: ACOG — Depot medroxyprogesterone acetate · Mayo Clinic — Depo-Provera · MedlinePlus (NIH) — Medroxyprogesterone injection · Drugs.com — Depo-Provera · Planned Parenthood — The Shot.