With temperatures expected to reach 33C this weekend, health experts are urging individuals using weight loss injections containing GLP-1 receptor agonists, such as semaglutide, to be cautious of dehydration. Dr. Suzanne Wylie, a GP and medical advisor, highlights that these medications can lead to side effects like nausea, vomiting, and diarrhea, which increase fluid loss. As the body naturally loses more fluids in hot weather, those on these injections are at a higher risk of dehydration-related illnesses like heat exhaustion and heatstroke.

Dr. Wylie emphasizes the importance of staying hydrated, suggesting that adults typically aim for 1.5-2 liters of fluid daily, with increased intake during heatwaves. Symptoms of dehydration can range from headaches and fatigue to more severe signs like confusion and muscle cramps. To combat dehydration, she recommends carrying a water bottle, consuming water-rich foods, and drinking fluids regularly, even if not feeling thirsty. Additionally, dehydration may elevate the risk of gallstones, adding another layer of concern for those undergoing rapid weight loss.