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Weight Loss Jabs Spark Surprise Pregnancies
25 Jul
Summary
- Weight loss injections may unexpectedly improve fertility in women.
- These drugs are not licensed for use during pregnancy.
- Significant weight loss can restore hormonal balance and ovulation.

Millions in the UK are using weight loss injections such as Mounjaro and Wegovy, which may carry an unexpected side effect: an increased chance of pregnancy. Online, these occurrences are being referred to as 'Ozempic babies.' Dr. Amir Khan highlights that individuals who previously struggled with fertility are now conceiving while on these drugs.
Doctors emphasize the importance of contraception for those on these injections, as the significant weight loss they induce can enhance fertility. The primary concern is that these medications are not licensed for pregnancy, meaning they are unsuitable for use when trying to conceive or if pregnancy is suspected.
Dr. Khan explained on a podcast that these accidental pregnancies are occurring, particularly in women with insulin resistance or conditions like PCOS. He believes the jabs alter the body's biology enough to increase pregnancy risk, though they are not direct fertility treatments.
User testimonials confirm these experiences, with many reporting pregnancies on Mounjaro, sometimes even while using birth control. Experts suggest that the indirect fertility boost likely stems from improved insulin sensitivity and hormonal regulation associated with substantial weight loss, which can help restore regular ovulation, especially for those with PCOS.
Professor Gerard Conway notes that for women with PCOS, improved insulin sensitivity from weight loss can decrease androgen levels and restore ovulatory cycles. However, it is crucial to remember that neither Mounjaro nor Wegovy is approved as a fertility treatment. Current UK guidance advises discontinuing Mounjaro at least one month and Wegovy at least two months before attempting conception.