Pure, white and deadly….sugar is a secret ingredient to most processed food items, including ones you might not suspect, like yoghurt and tomato sauce. We all know it is energy dense, and promotes weight gain, but there is a subtle twist. Half a sucrose molecule is fructose and half is glucose. Your body knows and recognises glucose, but fructose is a problem. Before sugar cane gave the world refined sugar, sweetness came from fruit, and fruit came into the human diet in autumn. The major sugar in fruit is fructose. Fructose therefore, presented to the metabolism in small quantities just before winter, evolved to become a molecule that went straight to fat. That was useful back when people needed winter energy stores, but today we eat fructose in sugar in significant quantities every day. Your body is still programmed to make fat with it. And not just any fat. It makes the fat around the organs in your abdomen, which is far more inflammatory than fat under your skin. It doesn’t even necessarily push your body weight up. Slim people who eat sweet things things will still accumulate the dangerous type of fat. By all means eat plenty of fruit; it is full of anti-inflammatory polyphenols. But beware sweetness in any other form.