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 23 August 2017 bacteria that occur naturally in your digestive tract may affect your mood It may sound a little strange, but the bacteria that occur naturally in your digestive tract may affect your behaviour and your mood. A new study by Canadian scientists found that people with irritable bowel syndrome (IBS) who also suffer from depression can improve their mental health by taking probiotics. The research, which involved 44 adults with IBS and mild to moderate anxiety or depression, demonstrated a significant decline in the symptoms of depression after taking a daily dose of a probiotic called Bifidobacterium longum for six weeks. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Medical Exercising with allergies – what you should know Medical Do therapists need therapy? Lifestyle Scientists closer to drug that cuts nicotine dependence Diet and nutrition Gluten-free craze: But what about people who really can't have gluten? News Drug addicts target patients for their medication News Health dept commits to resolve critical ARV shortages before year end 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.