Do weight-loss drugs give athletes a competitive edge? GLP-1 weight-loss drugs can reduce weight and improve health, but could they also boost athletic performance? Lindsay Clancy's trial puts postpartum psychosis in the spotlight Postpartum psychosis is a psychiatric emergency that can involve mania, depression, hallucinations and delusions. Young adults are taking prescription drugs instead of alcohol - and it's dividing experts Increasingly, young adults are taking anxiety medication to feel "drunk" at parties. But it's not a free lunch, experts warn. Ebola outbreak in DR Congo becomes deadliest in its history The outbreak was already the fastest growing on record, caused by a rare species of Ebola called Bundibugyo. What's driving men to get penis fillers, despite the risks? Men who have had the procedure can expect 10-20% more girth for the next six to nine months - but it can go wrong. Health in the heat Sun-tanned cauliflowers and knobbly spuds - the heatwave veg that's good to eat British shoppers should expect to see more wonky vegetables due to repeated heatwaves. How much sunshine do we really need? Some people just need a few minutes per day in the summer – while others require much longer. What colour should you wear in the heat? Is it dry or humid? This is the ultimate question when choosing what to wear. Summer Wellness How to exercise safely in hot weather Scientists say it is important to find ways to exercise when temperatures soar to protect your long-term health. Here's how you can keep going when things hot up. Why people are turning to 'bibliotherapy' "Bibliotherapy" has been soaring in popularity as a means of improving people's wellbeing. But getting it right depends on the book, and the person. How Duolingo became so addicting, according to its CEO Perhaps no app has mastered user loyalty quite like Duolingo, the gamified language-learning platform 34 million people a day can't put down. Struggling with brain fog? Here's how to fix it It's common to become forgetful or mentally sluggish but there are easy ways to cut through the haze. How 20 minutes in nature can boost your health Spending just 20 minutes in nature can lower blood pressure, heart rate and stress levels. What screen time does to children's brains is more complicated than it seems Screen time has become synonymous with bad news - but the science may not be as straightforward as it seems. Sign up to our newsletters Six Steps to Calm Discover a calmer future with this course of six science-backed techniques, weekly to your inbox. Trusted insights for better health and wellbeing rooted in science, every Wednesday to your inbox. How a tiny chip can hold information from your gut A new organ-on-a-chip technology helps doctors design personalised treatments for gut health. Do you need to drink electrolytes to stay hydrated? Electrolyte-packed drinks are said to optimise health and hydration. But do we really need them? The immersive tech preparing doctors for lifesaving surgery Tech Now meets medical teams using mixed reality environments to rehearse life-or-death operations. The health benefits of drinking matcha tea As a self-confessed coffee addict, Melissa Hogenboom examines the science behind matcha tea's health benefits. The race to unlock nature’s hidden secrets A team of researchers is working on an ambitious project to build the world’s largest biological database. Why walking backwards can be good for your health Research shows the activity of 'retro-walking' can have surprising benefits for your physical health and brain. Lab-grown teeth could soon replace fillings and implants While teeth play a greater role in health than many realise, current dental solutions for tooth loss are temporary and subpar. What if we could regrow our teeth instead? How weight lifting can help you stay healthier as you age Why you're never too old for therapy

Why do we want to be remembered after we die? The health effects of jet lag, and how to cope Jet lag is an often-unavoidable effect of long-haul travel, and it has several effects on the human body. Here's how to limit the worst effects. Parents weren't always this tired. What changed? Want a better night's sleep? Go camping Your phone's blue light isn't ruining your sleep Nutrition and Exercise Intermittent fasting works wonders in mice. In humans, it's a different story​ Proving that intermittent fasting works, like any lifestyle intervention, is notoriously difficult. But new technologies will better help us to understand what works and what doesn't. We're getting mealtimes wrong - here's the best time to have dinner Six easy swaps to avoid ultra-processed foods Here's what to eat to keep your bones strong The habits that help children to eat more vegetables over their lifetime Small changes in how children experience food every day can have a lasting impact on what they eat. What blindside divorce tells us about modern love Science says dating app users fall into the same cycle. Here's how to spot it Six families, six very different summer trips What's Up Docs? People Fixing The World Complex with Kimberley Wilson Four ways to extend the benefits of a holiday Shorter trips, awe, nostalgia and "satisficing" – these tricks will leave you feeling extra rested after a holiday. Should you stop cracking your knuckles? Like a firework exploding in the joint – here's everything you need to know about cracking your knuckles. The iPhone's hidden fix for motion sickness A buried iPhone setting is turning heads and saving stomachs. But does relief just mean more time staring at your screen? How period trackers share your private details Some apps are sharing users' health data. New research uncovers which apps lock down your privacy, and which don't. Sewage, rat pee and toxic algae: How safe is wild swimming for your health? Swimming in rivers and lakes is booming, but heavy rain, sewage overflows and farm runoff can lead to disease outbreaks. Here's how to spot when the risks to health are highest. The brutal maths behind Tour de France wins The Tour de France, which finishes this weekend, is regarded as one of the world's toughest cycle races. Winning it is a psychological as well as a physical test. South Korea is becoming a medical tourism hotspot Travellers are increasingly adding comprehensive health check-ups to their South Korea itineraries - drawn by fast results, English-language support and prices that can undercut those back home. The dangers of heavy menstrual bleeding As women have fewer children and more periods, heavy menstrual bleeding is becoming more of a health burden. The shark that lives for 400 years – and what it can teach us about longevity Some Greenland sharks alive today may have been contemporaries of Shakespeare. With a scarred heart that beats for centuries, this deep-sea shark defies age-related decline. I danced every day for a week to improve my brainpower From improved concentration to higher creativity, dancing offers a range of brain-boosting benefits. And you don't need to spend hours on the dance floor to feel the effects. Your motivation style may explain why some goals feel harder Are you driven by recognition, money, or security? Knowing your motivation style could help you realise your goals. The far-reaching impacts of wildfire smoke - and how to protect yourself Here are the profound ways wildfire smoke influences your physical and mental health. These medieval solutions to stress and burnout can help us today Stress and mental exhaustion aren't new – and the wisdom of the Middle Ages about how to deal with burnout still rings surprisingly true today. 'Once it's gone, it's gone': How to future-proof your hearing It's not just rocket launches and death metal concerts that lead to hearing loss. Many everyday activities can cause damage. Here's what you can do to protect your ears. This 123-year-old air-con system has lessons for managing today's extreme heat As climate change roasts cities around the world, history shows that air conditioning can be the difference between life and death for vulnerable people – but it comes at a cost.