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Hundreds of thousands of people worldwide are taking drugs like Ozempic to lose weight. But what do we actually know about them? This month, The Conversationā€™s experts .

Weā€™ve heard a lot about the impacts of Ozempic recently, rapid weight loss and lowered blood pressure, to persistent vomiting and ā€œOzempic faceā€.

Now weā€™re seeing a rise in stories about ā€œā€, where women who use drugs like Ozempic (semaglutide) report unexpected pregnancies.

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But does semaglutide (also sold as Wegovy) improve fertility? And if so, how? Hereā€™s what we know so far.

Remind me, what is Ozempic?

Ozempic and related drugs (glucagon-like peptide-1 receptor agonists or GLP-1-RAs) were developed to help control blood glucose levels in people with type 2 diabetes.

But the reason for Ozempicā€™s worldwide is that it by slowing stomach emptying and reducing appetite.

Ozempic is prescribed in ×īŠĀĢĒŠÄVlog as a diabetes treatment. Itā€™s not currently approved to but some doctors prescribe it ā€œoff labelā€ to help people lose weight. Wegovy (a higher dose of semaglutide) is for use in ×īŠĀĢĒŠÄVlog to treat obesity but itā€™s not yet available.

How does obesity affect fertility?

Obesity affects the that regulates the menstrual cycle.

Women with a body mass index (BMI) above 27 are than women in the normal weight range to be unable to conceive because they are less likely to ovulate.

The metabolic conditions of type 2 diabetes and (PCOS) are both linked to obesity and fertility difficulties.

Women with type 2 diabetes are more likely than other women to have obesity and to experience .

Similarly, women with PCOS are more likely to have obesity and than other women because of hormonal imbalances that cause irregular menstrual cycles.

In men, obesity, diabetes and metabolic syndrome (a cluster of conditions that increase the risk of heart disease and stroke) have on fertility.

Low testosterone levels caused by obesity or type 2 diabetes can the quality of sperm.

So how might Ozempic affect fertility?

Weight loss is recommended for people with obesity to reduce the risk of health problems. As weight loss can improve menstrual irregularities, it may also increase the in women with obesity.

This is why are the most likely reasons why women who use Ozempic report unexpected pregnancies.

But unexpected pregnancies have also been reported by women who use Ozempic and the contraceptive pill. This has led some experts to suggest that some GLP-1-RAs might affect the and make it less effective. However, itā€™s uncertain whether there is a connection between Ozempic and contraceptive failure.

In men with type 2 diabetes, obesity and low testosterone, drugs like Ozempic have shown for weight loss and increasing testosterone levels.

Avoid Ozempic if youā€™re trying to conceive

Itā€™s unclear if semaglutide can be harmful in pregnancy. But data from animal studies suggest it due to potential risks of fetal abnormalities.

Thatā€™s why the recommends women of childbearing potential use contraception when taking semaglutide.

Similarly, state health professionals should ensure women with PCOS who use Ozempic have effective contraception.

Guidelines recommended stopping semaglutide at least two months .

For women who use Ozempic to manage diabetes, itā€™s important to seek advice on other options to control blood glucose levels when trying for pregnancy.

What if you get pregnant while taking Ozempic?

For those who conceive while using Ozempic, deciding what to do can be difficult. This decision may be even more complicated considering the unknown potential effects of the drug on the fetus.

While there is little scientific data available, the findings of an of pregnant women with type 2 diabetes who were on diabetes medication, including GLP-1-RAs, are reassuring. This study did not indicate a large increased risk of major congenital malformations in the babies born.

Women considering or currently using semaglutide before, during, or after pregnancy should consult with a health provider about how to best manage their condition.

When pregnancies are , women can take steps to improve their babyā€™s health, such as taking folic acid before conception to reduce the risk of neural tube defects, and stopping smoking and consuming alcohol.

While unexpected pregnancies and ā€œOzempic babiesā€ may be welcomed, their mothers have not had the opportunity to take these steps and give them the best start in life.

Read the other articles in The Conversationā€™s here.