In this edition of The Naked Scientists: Weight loss jabs are now being prescribed by GPs in England. But do we know enough about the side effects? Also ahead: a new simple test that could safely replace endoscopies for patients with Barrett's oesophagus. Plus, we'll hear from one of the engineers at the Vera Rubin Observatory - which is shedding new light on the cosmos... Like this podcast? Please help us by supporting the Naked Scientists Like this podcast? Please help us by supporting the Naked Scientists