Obesity and Hysterectomy: Risks, Surgery Options and How to Prepare

Many women who are told they need a hysterectomy are also living with obesity, and it is natural to wonder what that means for the operation. Can it still be done through small cuts? Is it more dangerous? Will the surgeon ask you to lose weight first? And will the surgery itself make you gain weight? This guide explains what the research and the main US gynecology guidance say about obesity and hysterectomy, which type of operation is usually best, and what you can do in the weeks before and after surgery to lower your risks.

The short answer

• Hysterectomy is done safely in women with obesity every day. Obesity raises some risks, mainly wound infection, blood clots and wound healing problems, but most women recover well.^[2]
• The type of operation matters more than the number on the scale. Most of the extra risk seen in studies comes from open abdominal surgery. Vaginal, laparoscopic and robotic hysterectomy are generally preferred when they are possible.^[2][3][4]
• Preparation helps: treating sleep apnea, diabetes and high blood pressure, stopping smoking and staying active before surgery all make the operation and recovery safer.^[2]
• If you take a GLP-1 medicine such as semaglutide, tell your surgeon and anesthesiologist. Most people can keep taking it, but some need a liquid diet the day before or a change of plan.^[9]
• Hysterectomy with the ovaries kept has not been shown to cause weight gain. Removing both ovaries before menopause was linked to a faster rise in BMI in one long-term study.^[10]

What doctors mean by obesity

Doctors usually describe weight using the body mass index (BMI), which compares your weight with your height. For adults, the CDC uses these groups:^[1]

• Healthy weight: BMI 18.5 to under 25
• Overweight: 25 to under 30
• Class 1 obesity: 30 to under 35
• Class 2 obesity: 35 to under 40
• Class 3 (severe) obesity: 40 or higher

BMI is a screening number, not a full picture of your health.^[1] For surgery, your team will also look at where you carry weight (fat inside the abdomen makes keyhole surgery harder than weight on the hips and thighs), your fitness, and conditions that often come with obesity, such as diabetes, high blood pressure and sleep apnea.^[2][6]

Why obesity and hysterectomy often go together

Obesity is linked to several conditions that can lead to a hysterectomy. The clearest example is endometrial (uterine) cancer. Fat tissue makes estrogen, and years of extra estrogen can make the lining of the uterus grow too much. According to the National Cancer Institute, women with overweight or obesity have about two to four times the risk of the most common type of endometrial cancer, and women with severe obesity about seven times the risk, compared with women of healthy weight.^[7]

This is one reason why bleeding between periods, very heavy periods or any bleeding after menopause should always be checked, especially if you have obesity. In many cases the cause is benign, but your doctor may suggest a sample of the uterine lining before deciding on treatment. You can read more about the common reasons for a hysterectomy in our separate guide.

Does obesity make hysterectomy riskier?

Somewhat, yes, but the size of the extra risk depends a lot on how the operation is done. The American College of Obstetricians and Gynecologists (ACOG) notes that surgical site infection, blood clots (venous thromboembolism) and wound complications are more common after gynecologic surgery in women with obesity.^[2] Surgical site infection is already the most common complication of gynecologic surgery in general.^[8]

Two large studies help put numbers on this:

• Denmark, about 20,000 women (2004-2009): after hysterectomy for benign conditions, obesity was linked to more heavy bleeding during surgery and more infections. These extra risks were seen only in women who had open abdominal surgery, not in those who had laparoscopic or vaginal surgery. Interestingly, women who were underweight (BMI under 20) also had more bleeding complications and repeat operations.^[4]
• United States, about 207,000 laparoscopic hysterectomies (2012-2020): women with higher BMI had slightly more minor complications and longer operations (average times rose from about 115 to about 145 minutes across BMI groups). They did not have more major complications than women of normal weight.^[5]

Put simply: obesity adds some risk, mostly minor, and much of it can be avoided by choosing a minimally invasive approach when possible.

Which type of hysterectomy is best if you have obesity?

ACOG recommends minimally invasive hysterectomy whenever it is feasible, for all women, with the vaginal route preferred and laparoscopy as the next choice when a vaginal operation is not suitable.^[3] Its guidance on surgery in women with obesity says the same: in general, vaginal hysterectomy is linked to better outcomes and fewer complications than laparoscopic or abdominal hysterectomy.^[2]

Vaginal hysterectomy

The uterus is removed through the vagina, with no cuts on the abdomen. That avoids wounds in skin folds, which are the ones most likely to get infected or open. It is not possible for everyone, for example with a very large uterus or when the ovaries or other organs need careful checking. See our guide to vaginal hysterectomy.

Laparoscopic and robotic hysterectomy

These use a few small cuts and a camera. With obesity they can take longer, and the surgeon needs good access and a team used to it.^[5] During the operation you lie tilted head-down, which some people with severe obesity find hard to tolerate because of breathing pressure. In a review of 51 studies of women with endometrial cancer and obesity, about 6-7% of laparoscopic and 4-6% of robotic operations had to be changed to an open operation. Robotic surgery was less often stopped because of the head-down position, although overall complication rates were similar.^[6] Learn more about laparoscopic hysterectomy and robotic hysterectomy.

Open abdominal hysterectomy

Open surgery is still the right choice for some women, for example with a very large uterus, extensive scar tissue or some cancers.^[3] If you need it, ask your surgeon where the incision will go and how they plan to protect the wound. Our page on hysterectomy scars and incisions shows the main options.

Whatever the route, it is fair to ask your surgeon how often they operate on women with a similar BMI, and what would make them change the plan during surgery.

Getting ready for surgery

Check for sleep apnea and other conditions

ACOG advises that a meeting with an anesthesiologist before surgery should be considered if sleep apnea is suspected, if there is a risk of heart disease, if blood pressure is poorly controlled or if the airway may be difficult to manage.^[2] Loud snoring, stopping breathing during sleep or daytime sleepiness are worth mentioning. If you already use a CPAP machine, bring it to the hospital. Getting blood sugar and blood pressure under good control before a planned operation also lowers the risk of infection and other problems.

Should you lose weight first?

Major US guidance does not set one BMI above which a hysterectomy cannot be done, and policies differ between surgeons and hospitals. Some ask patients to lose weight before a planned, non-urgent operation. If your surgery is for heavy bleeding or fibroids and there is time, steady weight loss and more activity can make surgery and anesthesia easier. If the surgery is for cancer or a suspected cancer, it should not be delayed to lose weight. Ask your surgeon directly whether your weight changes the plan, the timing or the route.

The general advice in our guide on preparing for your hysterectomy applies too: stop smoking, keep moving, eat well and get checked for anemia.

If you take semaglutide or another GLP-1 medicine

GLP-1 medicines such as semaglutide, liraglutide and dulaglutide slow down how fast the stomach empties. Under anesthesia, food left in the stomach can be breathed into the lungs. In 2024, five US medical societies, including the American Society of Anesthesiologists, published joint guidance:^[9]

• Most people can keep taking their GLP-1 medicine before elective surgery. Stopping it is not automatically required.
• People at higher risk of stomach side effects, such as those on higher doses, should follow a liquid-only diet for 24 hours before the operation.
• If you are still in the dose-increase phase (usually the first weeks of treatment), elective surgery is best put off until the dose is stable and side effects have settled.
• If you have nausea, vomiting, stomach pain, bloating or constipation, surgery may need to wait until these improve.

Do not stop or change the medicine on your own. Tell your surgeon and anesthesiologist which weight-loss or diabetes injection you use, the dose and how long you have been taking it, so they can give you clear instructions.

In hospital and during recovery

Care after surgery for women with obesity is largely the same as for anyone else, with attention to any other health conditions.^[2] A few points deserve extra care:

• Blood clots: you will usually be encouraged to get up and walk soon after surgery, and you may be given compression stockings or blood-thinning injections.^[11] Keep walking a little and often at home.
• Wound care: if you have abdominal cuts, keep them clean and dry, especially under a skin fold. Ask the nurses how to check the wound and when to call.
• Breathing: deep breaths and moving around help keep the lungs clear. If you use CPAP, use it in hospital too.
• Gentle activity: follow the usual stages in our week-by-week recovery guide.

Will a hysterectomy make you gain weight?

A frequently quoted study from the US Study of Women’s Health Across the Nation followed nearly 2,000 midlife women for up to 10 years. BMI rose slowly in all of them as they aged. After surgery, women who had a hysterectomy with both ovaries removed gained BMI faster (about 0.21 points a year) than women after natural menopause (about 0.08 a year). Women who had a hysterectomy but kept their ovaries did not show this faster rise.^[10] The authors also pointed out that weight can be both a cause of the conditions that lead to surgery and a result of it, so the link is not simple.

In practice, less activity during recovery, the effects of menopause and normal aging all play a part. Our article on weight gain or weight loss after hysterectomy covers this in detail, and our guide to surgical menopause explains what happens when the ovaries are removed.

When to call your doctor after surgery

Contact your surgical team or seek urgent care if you have:

• Fever of 100.4°F (38°C) or higher, or chills
• A wound that becomes more red, hot, swollen or painful, oozes pus or starts to open
• Pain, swelling or warmth in one calf or leg
• Shortness of breath, chest pain or coughing up blood (call 911)
• Heavy vaginal bleeding or foul-smelling discharge
• Pain that keeps getting worse instead of better, or vomiting that does not stop

Frequently asked questions

Is there a weight limit for a hysterectomy?

There is no single national cut-off. Some surgeons and hospitals have their own limits for planned surgery or for certain approaches, and the decision depends on your overall health, the reason for surgery and the surgeon’s experience. If one surgeon says no, a gynecologist with more experience in minimally invasive surgery may be able to offer another option.

Can I have a vaginal or laparoscopic hysterectomy if I am overweight?

Often, yes. ACOG considers vaginal hysterectomy the approach with the best outcomes in general, including for women with obesity, and laparoscopy the next choice.^[2][3] Whether it is right for you depends on the size of your uterus, previous surgery and other factors.

Do I need to stop Ozempic or Wegovy before surgery?

Usually not, according to 2024 guidance from US medical societies, but you may be asked to follow a liquid diet the day before, and surgery may be delayed if you have just started or increased the dose or have stomach symptoms.^[9] Follow your own team’s instructions.

Does a hysterectomy cause obesity?

Removing the uterus alone has not been shown to cause obesity. Removing both ovaries before menopause was linked to faster weight gain in one long-term study.^[10] If your ovaries will be removed, ask whether hormone therapy is an option for you. Read more about the different types of hysterectomy.

Sources

1. Centers for Disease Control and Prevention. Adult BMI categories.
2. American College of Obstetricians and Gynecologists. Committee Opinion No. 619: Gynecologic surgery in the obese woman. Obstetrics & Gynecology. 2015;125(1):274-278.
3. American College of Obstetricians and Gynecologists. Committee Opinion No. 701: Choosing the route of hysterectomy for benign disease. Obstetrics & Gynecology. 2017;129(6):e155-e159.
4. Osler M, Daugbjerg S, Frederiksen BL, Ottesen B. Body mass and risk of complications after hysterectomy on benign indications. Human Reproduction. 2011;26(6):1512-1518.
5. Meyer R, Caron J, Hamilton KM, et al. Association of body mass index with surgical complications after minimally invasive hysterectomy. Archives of Gynecology and Obstetrics. 2025;312(3):813-822.
6. Cusimano MC, Simpson AN, Dossa F, et al. Laparoscopic and robotic hysterectomy in endometrial cancer patients with obesity: a systematic review and meta-analysis of conversions and complications. American Journal of Obstetrics and Gynecology. 2019;221(5):410-428.
7. National Cancer Institute. Obesity and cancer.
8. American College of Obstetricians and Gynecologists. Practice Bulletin No. 195: Prevention of infection after gynecologic procedures. Obstetrics & Gynecology. 2018;131(6):e172-e189.
9. Kindel TL, Wang AY, Wadhwa A, et al. Multisociety clinical practice guidance for the safe use of glucagon-like peptide-1 receptor agonists in the perioperative period. Surgery for Obesity and Related Diseases. 2024;20(12):1183-1186. Summary: American Society of Anesthesiologists, New multi-society clinical practice guidance released (October 2024).
10. Gibson CJ, Thurston RC, El Khoudary SR, Sutton-Tyrrell K, Matthews KA. Body mass index following natural menopause and hysterectomy with and without bilateral oophorectomy. International Journal of Obesity. 2013;37(6):809-813.
11. NHS. Hysterectomy: risks.

This article is for general information and is not a substitute for medical advice. Always discuss your own risks, the best type of surgery for you and any medicines you take with your gynecologist and anesthesiologist, and contact them or emergency services if you are worried about any symptom after surgery.