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 04 December 2017 Do you itch when in a stressful situation? Have you ever noticed that some people seem to start scratching themselves when they’re in stressful situations? A new study suggests that this kind of behaviour may actually a be a result of evolution in monkeys, apes and humans which acts as a social communication tool signalling that an individual is experiencing anxiety. It appears to help with social cohesion by reducing aggression in others. Researcher Jamie Whitehouse explains that revealing stress to others this way makes the situation more transparent and "transparency ultimately reduces the need for conflict”. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news News Second wave of hormone shortage a crisis in SA transgender community Sex STD rates continue to rise in the US News The project that’s generating an income for people with disabilities Workflow 'Smartphone slouching' more serious than it sounds Diet and nutrition Here's why a regular cup of tea is good for you Medical Vision problems strike more than 2 billion globally Live healthier Lifestyle » E-cigarettes: Here are five things to know E-cigarettes have become hugely popular in the past decade, but a rash of vaping-linked deaths and illnesses in the US is feeding caution about a product that's already banned in some places. Allergy » Ditch the itch: Researchers find new drug to fight hives A new drug works by targeting an immune system antibody called immunoglobulin E, which is responsible for the allergic reaction that causes hives.