Losing weight during menopause feels harder for reasons out of your control. Hormonal shifts in midlife change the way your body processes energy, stores fat, and manages hunger—not to mention the mood and lifestyle changes. 

Many women already take hormone replacement therapy (HRT) to ease other menopausal symptoms. And some start considering GLP-1 medications, like Wegovy®, when weight management becomes a concern. But what happens when you combine Wegovy® and estrogen? 

In this article, learn what estrogen does for your metabolism, how Wegovy® interacts with it, and what to discuss with your provider before mixing these two.

How does estrogen affect weight and metabolism during menopause?

In addition to its role in the reproductive system, estrogen contributes to your metabolism. It directs fat toward the hips and thighs, helps your cells absorb blood sugar efficiently, and supports leptin, the hormone that tells your brain you’re full. 

When estrogen levels drop during menopause, these effects fade. This starts a chain reaction in your body:

• Insulin resistance: Insulin normally helps your cells turn food into energy. Without estrogen’s support, your cells stop responding to it well, and more of what you eat gets stored as fat. 
• Increased appetite: Because your brain loses estrogen’s aid, it stops receiving leptin’s signals properly, which causes appetite and cravings to go up.
• Muscle loss: Postmenopausal women lose about 0.6% of their muscle mass per year. Low estrogen levels seem to play a role in this decline, but more research is needed to explain the mechanisms behind the drop.

Because your metabolism and estrogen production has slowed down, your body adds weight that tends to settle in your midsection, deep around your organs. Doctors call this visceral fat. This specific type of fat triggers inflammation throughout your body, which increases your risk for heart disease and type 2 diabetes. These changes explain why midlife weight gain happens, and why traditional diet and exercise plans no longer seem to work as they used to.

Does Wegovy® change your estrogen levels?

Wegovy® is a GLP-1 receptor agonist medication, not a hormone therapy. Its active ingredient, semaglutide, mimics glucagon-like peptide-1 (GLP-1), a gut hormone that helps regulate appetite and blood sugar.

However, semaglutide has an indirect effect on estrogen production. Fat converts other hormones into small amounts of estrogen through an enzyme called aromatase. After menopause, your ovaries stop making estrogen, and your fat tissue takes over as the primary source of this hormone. 

When you lose a significant amount of weight on Wegovy®, or other GLP-1, you’re also losing some of the tissue that produces estrogen. Researchers have yet to determine whether GLP-1s reduce estrogen levels in a way you’d notice, like more hot flashes or changes in mood.

What does the research say about combining Wegovy® and HRT?

Research on this combination is still early, but one study stands out. In 2024, researchers at the Mayo Clinic published a retrospective cohort study that looked back at the medical records of 106 postmenopausal women treated with semaglutide for weight management. Of those, 16 were also on hormone replacement therapy (HRT).

After one year, the women on both semaglutide and HRT lost about 16% of their body weight, compared with 12% for those on semaglutide alone. That difference held up at every checkpoint—three, six, nine, and 12 months—and remained significant even after the researchers accounted for other factors that could explain it, like age and BMI.

Why might HRT make a difference? Like we said earlier, estrogen helps regulate appetite signals and insulin, two of the systems that GLP-1 medication also targets. Restoring estrogen through HRT may support those same pathways.

It’s important to note that this study looked back at records rather than running a controlled trial, and that the HRT group was small, just 16 women. The authors themselves called for larger studies to confirm the results. Still, for women exploring Wegovy® for menopause weight loss, early signs are encouraging.

Taking Wegovy® and HRT together: What to watch for

There’s no medical reason you can’t use both treatments at the same time. It’s worth noting that semaglutide slows the speed at which your stomach processes food and medication, potentially impacting oral HRT’s absorption schedule. 

Delayed gastric emptying may slow the time to peak concentration (Tmax) and modestly reduce peak concentration (Cmax). But overall drug exposure (AUC) is generally preserved. In other words, the medication is typically absorbed later rather than less. For menopausal hormone therapy, where the goal is sustained hormone exposure rather than a rapid peak concentration, this delayed absorption is unlikely to be clinically significant.

HRT delivered through the skin, like patches or gels, avoids this concern by bypassing the stomach entirely. The British Menopause Society recommends transdermal estrogen for women on semaglutide and other GLP-1 therapies. 

If you’re on oral HRT and notice returning menopausal symptoms after starting semaglutide—more hot flashes, mood changes, trouble sleeping—that may signal reduced absorption. Bring it up with your provider, who may suggest switching routes.

Beyond the absorption question, there are few other things your care team should consider:

• Endometrial protection: If you have a uterus, you need progesterone alongside estrogen to protect your uterine lining. And if you already take progesterone orally, the same absorption concern applies. A hormonal IUD, a combined patch, or vaginal progesterone can avoid this. 
• Body composition: GLP-1 medications cause some muscle loss alongside fat loss. Since muscle mass already declines faster after menopause, your provider may recommend strength training or other strategies to help preserve lean tissue.
• Side effects: Both oral and injectable forms of semaglutide and the hormones in HRT can cause nausea. If stomach issues get worse after combining treatments, adjusting the timing, dose, or HRT route can help.

Next steps with Maven Clinic's GLP-1 Care

Combining Wegovy® and HRT can be a powerful approach to managing weight during menopause. But it’s not as simple as starting both and hoping for the best. The HRT route you’re on, the dose, and the timing all need to be considered together. And what works well at three months may need adjusting at six.

You need a care team that understands both treatments. Maven Clinic’s Hormone Care program pairs you with providers who specialize in menopause and midlife health. For people also considering a GLP-1 treatment, Maven Clinic’s GLP-1 Care program provides clinically supervised weight management designed for your body and life stage.

Connect with a Maven Clinic specialist to find out how Wegovy® and hormone therapy can work together for your health.

FAQ

Does Wegovy® affect estrogen levels?

Not directly. Semaglutide works on appetite and blood sugar through GLP-1 receptors. It has no effect on estrogen or other reproductive hormones. So no, semaglutide doesn’t increase estrogen levels, and it’s not designed to. 

But there’s an indirect link between the two. After menopause, fat tissue becomes your body’s main source of estrogen, producing small amounts through an enzyme called aromatase. Losing a large amount of fat means losing some of that estrogen-producing tissue.

Can you take Wegovy® and HRT at the same time?

Yes, and early research suggests the combination may actually work better for weight loss than semaglutide alone. The main practical concern of taking Wegovy® and HRT at the same time is that semaglutide can reduce how much your body absorbs from oral estrogen or progesterone.