Please see our Privacy Notice for details of your data protection rights. Three in 10 children aged between two and 15 are overweight or obese. Yet as public frenzy builds around the status of sugar, two doctors have conducted a fascinating experiment to see who is the most to blame in the heavyweight fight: Fat or Sugar? Chris and Xand van Tulleken, who have pushed themselves to extremes on expeditions to the Arctic and the jungle, devised an innovative personal challenge to find the answer. As identical twins with identical genes, they are ideally placed to test the impact of high fat and sugar diets. Xand, director of the Institute of Humanitarian Affairs at Fordham University in New York, went on a high-fat diet with just 5 per cent carbs while Chris had a super low-fat, high-carb regime with no food containing higher than 5g per g. We should not vilify a single nutrient. We will be demonising protein next after we have done with fat and sugar. After duelling through a cycle challenge and a cognitive test trading shares on a virtual stock market however, the verdict surprised both. Neither fat nor sugar was completely culpable and the real villain, a potent combination of high fat and high sugar in processed foods, had escaped the dock and was sunning itself on a metaphoric extradition treaty-free beach. The enemy is right in front of us in the shape of processed foods.
That stuff is toxic for you. And essentialy not eating more than our bodies need and doing some exercise. The quick explanation is a person on a lchf diet can appear insulin resistant in a glucose tolerance test. Feeding laboratory rats with either high-fat and high-sugar diets did little to change their daily habits or health but supply them with chocolate, biscuits and cheesecake a near fat and sugar split and behaviour changed radically. For testing the brain function of the brothers the producers chose to make them do stock trading with fake money. Even he uses a little bit of slow-release starch for maximum performance on his long training sessions: YouTube: Very Low Carb Performance Diabetes Finally the icing on the diabetes cake. Above is him today. But which diets work, why we eat too much and why losing weight is so hard don’t sit within any medical speciality.
This could have been such a yawn. Is it yet more popularised quasi-science, claiming life-threatening consequences from foods we eat every day? But Sugar v Fat, a BBC Horizon programme that took two identical twin doctors and put them on extreme low-fat and low-sugar diets for a month, was certainly different — possibly even a first for a diet programme. It was quick-moving, highly entertaining, and its conclusions were largely but not completely correct. The big problem with attempts to show science on human subjects on television is that for science to show anything beyond the blindingly obvious or totally banal normally requires studies of large numbers of individuals. People can be enormously different, so we often need huge numbers to be sure that a result is true and a treatment or diet really does work. So choosing a pair of identical twins — Xand and Chris Van Tulleken — to compare the effects of low-carb and low-fat diets was inspired, because they are a genetic and metabolic match. And following two prevailing threads of dietary advice in the US and the UK, Xand took on a low-carb diet while Chris got low-fat. As participants they were pretty average, just a little overweight perhaps, but nothing serious.