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 27 November 2017 The many electronic screens we watch on a daily basis are bad for our sleep. The many electronic screens we watch on a daily basis are bad for our sleep. Devices like smartphones, computer screens and tablets emit blue light which is known to suppress the production of a hormone called melatonin that is associated with sleep and the normal functioning of our body cycles. A recent study shows that this kind of light has a detrimental impact, not only on the duration of sleep, but also on its quality. Screens that emit red light, by contrast, do not have these negative effects. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news News SAHRC overseeing HIV patients' transfer to public health facilities Medical 7 reasons why your sinusitis could be worse in winter Lifestyle How skipping this much sleep makes arguing with your partner more dangerous Fitness Unlock your best performance with these 4 mindset tips Lifestyle SEE: How many people smoke around the world? Diet and nutrition Chef schools compete to produce tasty R15 lunch box From our sponsors Win a R1 500 hamper with Alpecin Hypertension Consumer Fact Sheet Understanding diabetes self-management WIN a R2000 Skin Renewal voucher! Live healthier Mental health & your work » How open are you about mental illness in the workplace? Mental health in the workplace – what you can do to help If you know that one of your colleagues suffers from a mental illness, would you be able to help them at work? Maligay Govender offers some helpful mental health "first aid" tips. Sleep & You » Sleep vs. no sleep Diagnosis of insomnia 6 things that are sabotaging your sleep Kick these shut-eye killers to the kerb and make your whole life better – overnight.