We join forces with Sarah Marshall from You’re Wrong About to dive into a question for the ages: Blue balls — are they real? And we’ve got some BIG blue balls news in this episode! The survey we did when it originally aired has been turned into a peer-reviewed paper led by scientists at Queen’s University! WE MADE SCIENCE! And if you took our survey, you helped!

The dentist tells us to floss, brush, avoid certain food and drinks ... but what actually matters when it comes to having healthy teeth? We're drilling into the science on all of it. Plus, we go undercover to find out how many dentists are trying to upsell you when you go in for a checkup. We talk to epidemiologist and dentist Professor Philippe Hujoel, dentist Dr. Alisha Virmani, and economist Dr....

When it comes to keeping our skin looking younger, what works? Retinol, hyaluronic acid, vitamin C? This simple question has become confused by the billion-dollar skin-care industry, which floods us with scientific-sounding claims about the chemicals they say we should put on our face. We find out the real science on what you need for healthy skin with Dr Natalia Spierings, Dr Szu Wong and Kirsten ...