A young woman who was deemed too heavy for NHS IVF treatment has revealed she conceived naturally just weeks after losing six stone while using the weight-loss medication Mounjaro. Chloe Rose, a 25-year-old beautician from Stanwell, Surrey, and her husband Jack began trying for a baby in 2019, facing years of negative pregnancy tests before being placed on an NHS fertility treatment trial in January 2024.
Weight Barrier to Fertility Treatment
Mrs Rose explained that she gained significant weight during the trial, leading to her removal from the programme entirely due to her weight. She stated, 'I think the fact that I couldn't do it because I weighed too much put into my head that if I want any further treatment anywhere for my fertility, I'm going to have to lose weight.' Despite attempts with various diets and gym sessions, nothing proved effective, compounded by health issues including polycystic ovary syndrome (PCOS), arthritis, and steroid medication.
Turning to Mounjaro for Weight Loss
In July 2024, determined to lose weight to fulfil her dream of starting a family, Mrs Rose ordered Mounjaro from an online pharmacy at a cost of £135. Over five months, she successfully shed six stone, slimming down from a size 20 to a size 10, though she prefers not to disclose her starting weight. This dramatic weight loss came after years of struggle with her health conditions.
Unexpected Natural Pregnancy
Just weeks after discontinuing the Mounjaro injections, the couple discovered they were pregnant on January 20, 2025. Mrs Rose expressed mixed emotions, saying, 'I was ecstatic when I found out I was pregnant, but I was obviously terrified because you are meant to not be on Mounjaro for two months before you fall pregnant.' She added that her pregnancy was particularly surprising as she had not had a period for six years due to severe PCOS, conceiving without one.
Birth of a 'Miracle Mounjaro Baby'
Their daughter, Jeanie, was born on September 18, 2025, weighing 5lbs 1oz, after six years of trying to conceive. Mrs Rose credits Mounjaro with kickstarting her weight loss journey, which she believes was crucial to her pregnancy. She remarked, 'Mounjaro helped to give me the baby I'd always hoped for. I think that the weight loss is massively what did it, but Mounjaro definitely kickstarted that journey for me.'
Cautious Recommendations and Wider Context
Despite her positive experience, Mrs Rose advises caution, noting that Mounjaro may not be suitable for everyone. She explained, 'If people are struggling with their weight and they would like to get pregnant, I would say try Mounjaro, but it depends on why people are struggling to get pregnant. It's such an open-ended conversation, there are many aspects of people struggling to get pregnant.'
This story aligns with a broader trend, as a University College London study estimates that 1.6 million adults in England, Wales, and Scotland used weight-loss drugs like Wegovy and Mounjaro between early 2024 and early 2025. There has been a noted rise in 'Mounjaro babies,' where users conceive while on the medication, even with contraception.
Medical Perspectives on Weight Loss and Fertility
Doctors suggest that these drugs might increase pregnancy likelihood by reducing inflammation and boosting menstrual cycles through weight loss. Additionally, side effects such as vomiting could impair contraceptive pill absorption, raising the risk of unexpected pregnancies. A spokesperson for Lilly, the manufacturer of Mounjaro, emphasised that it should only be used under professional guidance, stating, 'We encourage patients to consult their doctor or other healthcare professional to discuss any possible side effects they may be experiencing and to ensure that they are getting genuine Lilly medicine.'
