Home > Newsletters > Need to Know > Other people’s pens can transmit viruses 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: Need to KnowOther people’s pens can transmit viruses advertisement Other news Lifestyle Lung scans of smokers with COPD can reveal heart disease Lifestyle Here are the unexpected places where germs live Diet and nutrition For cod's sake, eat more seafood if you can Parenting Single father: 'I speak to my daughter about sex' Medical Drinking coffee might help with this skin condition Medical Exercising with allergies – what you should know From our sponsors Dementia and Incontinence: what you need to know Tell-tale signs you need a mattress upgrade Keen to win a R2 000 voucher? Good health begins in your gastrointestinal tract Live healthier Gut health » Can't lose weight? Blame it on your gut Our nutrition experts weigh in on why gut health is such an important factor in weight loss, on World Obesity Day. Sleep better » Yes, there is such a thing as too much sleep A new study confirms that too little sleep can impair your brain, but interestingly, too much sleep is also a problem.