Collagen supplements have been widely promoted on social media, with claims that they'll strengthen hair and nails, lessen wrinkles and even ease joint pain. But are there studies backing these claims? NPR health correspondent Maria Godoy dives into the research and shares science-backed tips for better skin that are more effective. Fill out our survey at npr.org/lifekitsurvey.Follow us on Instagram: <a href="https://www.instagram.com/nprlifekit/?hl=en"target="_blank" >@nprlifekit</a><a href="https://www.npr.org/newsletter/life-kit"target="_blank" >Sign up for our newsletter here.</a>Have an episode idea or feedback you want to share? Email us at <a href="mailto:lifekit@npr.org"target="_blank" >lifekit@npr.org</a>Support the show and listen to it sponsor-free by signing up for Life Kit+ at <a href="http://plus.npr.org/lifekit"target="_blank" >plus.npr.org/lifekit</a> Learn more about sponsor message choices: <a href="https://podcastchoices.com/adchoices">podcastchoices.com/adchoices</a> <a href="https://www.npr.org/about-npr/179878450/privacy-policy">NPR Privacy Policy</a>

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