Home > News Updated 04 October 2016 Health24 Health Challenge: Week 12 It's time for our weekly health challenge! Find out if you can score a perfect 10 on our quiz. 0 Joshua Carstens NEXT ON HEALTH24X Win R5 000 with the Health of the Nation Survey 2016-11-14 09:34 More: News advertisement Other news News Win R5 000 with the Health of the Nation Survey Diet and nutrition Shcking finding: toxic metals in gluten-free food Medical Post-menopausal? Try getting some exercise Medical Struggling to get an erection? News Depression can also strike expectant and new dads Lifestyle SEE: Can your liver handle the alcohol? From our sponsors 10 facts about diabetes and insulin you need to know How to care for your vaginal flora JHB - Free Caregiver Workshop with TENA experts - 15 February JHB - Free home visit and assessment with a TENA nurse advisor Live healthier Hello? » SEE: Interesting facts about hearing loss Earworms: Let it go Is it bad to sleep with earplugs all the time? SEE: Do women hear better than men? The reason why men often appear not to be listening could be because they actually can't hear you. Confident smile? » Acidic drinks can harm your kids' smiles The facts on bleaching your teeth Am I taking good care of my teeth? Why are my teeth stained? We know the rules – brush your teeth twice a day and floss to keep them healthy. But, have you ever wondered what causes those stains that sometimes appear?