What happened when Calgary removed fluoride from its water supply

Earlier this month, Health and Human Services Secretary Robert F. Kennedy Jr. announced plans to end the federal recommendation that municipalities add fluoride to their drinking water. Amid the renewed debate, William Brangham spoke with Lindsay McLaren of the University of Calgary to discuss why that community removed fluoride from its water and why fluoridation started in the first place. Watch PBS News for daily, breaking and live news, plus special coverage. We are home to PBS News Hour, ranked the most credible and objective TV news show.   Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6   Follow us: TikTok: https://www.tiktok.com/@pbsnews X (formerly Twitter): http://www.twitter.com/newshour Instagram: http://www.instagram.com/newshour Facebook: http://www.pbs.org/newshour   Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe