Women are spending thousands of pounds to address an intimate and largely unexpected side effect linked to rapid weight loss caused by so-called “fat jabs.” As these injections grow quickly in popularity, doctors say sudden and significant weight loss is leading some women to notice changes in their labia or vulva. This has resulted in a rise in private cosmetic procedures commonly referred to as “labia puffing.” For those unversed, the vulva refers to the external female genital area, which includes the labia. The labia are the folds of skin that surround the vaginal opening.Weight-Loss Injections Go MainstreamOriginally developed to manage Type 2 diabetes, weight-loss injections have entered the mainstream at remarkable speed. As per Mirror, in the UK alone, about 2.5 million people are now using these drugs, according to figures reported by The Telegraph in October. That means roughly one in every 20 adults. Most users access the injections privately, as they are rarely available through the NHS. The report also noted that sales of medications such as Mounjaro and Wegovy reached 2.5 million in July, marking a sevenfold increase compared to the previous year.While headlines have largely focused on visible changes such as slimmer bodies and faces, including among celebrities like Sharon Osbourne and Serena Williams, medical professionals say other, less discussed effects are starting to emerge.Changes Beyond Common Side EffectsAlong with widely known side effects such as nausea, diarrhoea, constipation, abdominal pain, and vomiting, some women are now reporting noticeable changes in the appearance of their vulvas and labia.Doctors explain that the issue is not weight loss itself, but the speed at which it happens. Rapid weight loss strips fat from many areas of the body, including the vulval region. For some women, this leads to a loss of volume in the labia, causing loose or sagging skin. This can result in irritation and discomfort during everyday activities such as sitting, cycling, or exercising.Women Share Their ExperiencesMany women have taken to online forums to describe what they are experiencing. As per Mirror, one Reddit user shared, “She [the gynaecologist] told me my vulva is saggy and I will continue to experience pain when biking or sitting unless I have surgery or fillers.”Doctors say these outcomes are not surprising. Dr Michael Tahery, writing on his women’s health website, explained that “the rapid weight loss that occurs throughout the body may result in visible sagging of the labia or vagina because of overall fat and volume loss.”He added that this sagging can be caused by loose labia, excess skin in the vaginal area, wrinkles, or a combination of these factors. “It’s also common for rapid weight loss to cause the labia to suddenly feel out of proportion compared to how it previously felt,” he noted.Not Just a Cosmetic ConcernFor many women, the impact goes beyond appearance. The loss of natural cushioning can increase friction and sensitivity, turning once-comfortable activities into painful experiences. As a result, more women are seeking help from private clinics, where corrective procedures can cost around $2,000, or approximately £1,479. The treatment, often called labia puffing, focuses on restoring volume to the outer lips of the vulva.What Is Labia Puffing?Speaking to The Daily Star, Dr Shazia Malik, consultant gynaecologist at The Portland Hospital, explained how the procedure works. “Labia puffing uses dermal fillers, such as hyaluronic acid or fat, to restore volume to the labia majora, which are the outer lips of the vulva,” she said. “It is a minimally invasive procedure designed to improve appearance by increasing fullness, smoothness, and symmetry.”Dr Malik also pointed out that the demand is not limited to women using weight-loss injections. “The procedure is most commonly sought by women who want to regain a more youthful, fuller appearance due to ageing, weight loss, or childbirth,” she explained.A Wider Impact of Rapid Weight LossThe growing interest in these procedures highlights how dramatically weight-loss injections can change the body. Unlike gradual weight loss achieved through diet and exercise, the speed at which fat can disappear with these drugs means changes can occur in areas people do not expect. For some women, these sudden shifts are significant enough to push them toward cosmetic interventions to feel comfortable again.