Home > Newsletters > Daily: Love or hate Earth Hour? > Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxic > Health-in-Motion 02 September 2016 The human body requires a certain amount of darkness to remain healthy The human body requires a certain amount of darkness to remain healthy. Too much light can be bad for you – a fact that should be of concern for people who are exposed to bright light for long periods, including certain shift workers. Research involving mice has confirmed that six months of continuously living in bright conditions results in a significant loss of bone mass and endurance along with increased inflammation. The good news is that most of the effects are reversed quite speedily once a regular day-night cycle is re-established. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Fitness Build a stronger body with one super-move and one weight News Vitamin D no cure for brain diseases Parenting Do gluten-free kids' foods provide enough nutrition? Diet and nutrition To what extent are your genes responsible for your weight? Medical How secondhand smoke boosts sinusitis risk News Obesity adds to burden of traumatic brain injury From our sponsors Tell-tale signs you need a mattress upgrade Keen to win a R2 000 voucher? Good health begins in your gastrointestinal tract ACC 200 works fast to break down mucus Live healthier Smoking and weight gain » Don't think that you're off the hook if you smoke cigars 10 smoking myths people still believe Quitting smoking? Even a little exercise can help you stay slim Best results in limiting weight gain after quitting smoking were found in women who engaged in 150 minutes of moderate intensity activity per week. Baby talk » Why Khloé Kardashian can't breastfeed her baby Baby making Real talk: Is there a ‘right’ age to have a baby? PS Can my mom stop talking about my biological clock already?