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 05 September 2016 There are many reasons why people suffer from depression There are many reasons why people suffer from depression. Some causes are environmental while others are genetic. By analysing the DNA of over 300,000 people in Europe, scientists have recently discovered 17 distinct genetic variations that increase the risk of a person developing depression. The presence of each genetic variant is believed to make a tiny contribution to the chances of someone developing the condition. Pointing out that depression is really a disease of the brain, the researchers hope that their findings will lead to new treatment options. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Mental health Severe stress may send immune system into overdrive News SEE: How to fight prostate cancer with food Fitness How SA’s best bodyboarders tackle the deadliest waves Diet and nutrition 6 ‘extra’ health and beauty benefits of rooibos you didn’t know about Lifestyle Quitting smoking? Even a little exercise can help you stay slim Sex Do men really hook up more than women? 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 Your hearing » Are you going deaf or do you just need to unblock your ears? 4 foods that can improve your hearing Healthy eating may protect your hearing Watching what you eat can improve the quality of your hearing and reduce your risk of hearing loss. Quit smoking » Tougher anti-tobacco laws in the pipeline Bad news, smokers: It's going to be more inconvenient to smoke This is why many SA smokers quit – Health24 survey After running our survey for several weeks, the results are in – and they reveal interesting information about smoking and tobacco use in South Africa.