Thirty years of health advice urging people to adopt a low-fat diet to lower their cholesterol was having "disastrous health consequences", a leading UK obesity charity warned yesterday.Experts said the guidelines were based on "flawed science" and have resulted in increased consumption of junk food and carbohydrates.The report by the National Obesity Forum and the Public Health Collaboration said "eating fat does not make you fat". It argues saturated fat does not cause heart disease, while full-fat dairy products such as milk, yoghurt and cheese can protect the heart.The authors call for a return to "whole foods" such as meat, fish and dairy, as well as high-fat healthy foods like avocados.The study could be good news for Tim Noakes, who advocates a high-fat, low-carb diet.David Haslam, forum chairman, said: "I realised guidelines from on high suggesting high-carb , low-fat diets were the panacea, were deeply flawed."Processed foods labelled "low-fat", "lite" and "low-cholesterol" should be avoided and people with Type 2 diabetes should have a fat-rich diet rather than one based on carbohydrates, the report urges...