Home > Newsletters > Need to Know > Try mushroom tea Updated 19 July 2016 Action point 0 Don't smoke! Heavy smokers get more severe and frequent colds. Even being around smoke compromises the immune system, your body's defence against germs. For the latest on flu jabs and cold remedies, visit the Cold & Flu Centre. More in Newsletters Action point More: Need to KnowTry mushroom tea advertisement Other news Lifestyle Kids' metabolism may slow down during puberty Medical 'Natural killer' cell infusion may help leukaemia patients Diet and nutrition How to make sure you achieve your goals Medical Alcoholics may lack enzyme that controls impulse to drink Parenting Bond between kids and parents has long-term health benefits Medical Heavy drinking can harm the ageing brain From our sponsors How to still have a good life with diabetes Eye-Q: R50 off! Lose weight Otrivin Menthol relieves sinus congestion Live healthier Love coffee? Your heart may too » What to eat for white teeth Bad foods for teeth-whitening Do any of these drinks cause your teeth to hurt? Savour your coffee – with a bright smile Here's how to stop coffee from staining your teeth while enjoying all its health benefits. Get your groove back! » Get your move on! Morning run? 5 exercises to start your summer fitness regime 6 easy ways to make your workout fun again Some inspiration to make sure your workout routine don't become tedious.