Have you, or a loved one, thought of taking one of the new weight-loss jabs? With the impressive results they offer, it might seem a tempting thought, particularly if you've struggled with your weight for years. You may even have a friend or colleague who is using them and singing their praises. But does that mean they are also suitable for you? There's no doubt that GLP-1 agonists, as they are medically known, represent a huge breakthrough in the way we treat obesity, potentially transforming the lives of millions. Research also shows that they may help cut the risk of heart disease, kidney failure, dementia and help to treat addictions. But as a doctor I am very concerned that the mad scramble to get hold of semaglutide (brand names Ozempic and Wegovy) and tirzepatide (Mounjaro) has led to a Wild West market, where it's easy to buy these drugs, particularly online, and self-administer them without any kind of medical advice or nutritional support. This was a situation that would have also worried my father Michael who, though impressed with the new drugs' results, had significant reservations.