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Fortune
Fortune
Beth Greenfield

How GLP-1 weight-loss drugs can mess with birth control and pregnancy, U.K. agency warns

Closeup of woman's torso in orange sweater holding injectable weight-loss drug. (Credit: Getty Images)

Anecdotes abound about “Ozempic babies”—when women wound up with unplanned pregnancies while taking both birth-control and the popular GLP-1 drugs for diabetes or weight loss. 

But today marks the first official agency warning about the possibility of these drugs—specifically Mounjaro—decreasing the effectiveness of oral contraceptives.

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