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 18 August 2017 Why is dieting so difficult? Why is dieting so difficult? Because our body actively works against us! We have a built-in thermostat that couples the number of calories we eat to the number of calories we burn. When we eat less, our body compensates by burning fewer calories, making it much harder to lose weight. Scientists have recently identified a group of neurons in the brain’s hypothalamus which play a key role in this process, making us hungry when they’re activated, but minimising the number of calories that we burn when food intake is limited. 0 More: Daily Dose: This is why your vanilla or cinnamon flavoured e-cigarette is toxicHealth-in-Motion advertisement Other news Medical Gluten intolerance: Do you need a separate toaster, utensils in the kitchen? Medical Losing hair? Blame it on the air Parenting Could bone marrow be the missing piece in the fertility puzzle? News On-site residence facility to keep medical students safe Medical Less than half of HIV-positive teenagers in SA are accessing ARVs Lifestyle Breast tenderness before your period? These pain relief tricks from gynaes might help 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.