Can a daily multivitamin really slow biological ageing? Is obesity simply about willpower, or is the biology far more complex? And could just 15 minutes of exercise help your brain work more efficiently? This week we unpack the science behind obesity for World Obesity Day, break down the new research linking multivitamins to biological ageing, and explore how short bursts of exercise may boost brain performance. We also look at two trends shaping the wellness conversation right now: a campaign calling for a social media ban for under-16s and the resurgence of dangerous sunbed misinformation online. Send your questions for our weekly Q&A to ⁠[email protected]⁠. Order your copy of Ella's new book: ⁠⁠⁠⁠⁠⁠Quick Wins: Healthy Cooking for Busy Lives⁠⁠⁠⁠⁠⁠ Order your copy of Rhi's book: ⁠⁠⁠⁠⁠⁠The Fibre Formula⁠⁠⁠ Learn more about your ad choices. Visit podcastchoices.com/adchoices