In the fight against fat, 46-year-old Noreen Hunter is a battle scarred veteran. For most of her life she has struggled to lose weight with one low fat diet after another. She did lose weight , but, she always gained it back. In the past year alone she has re-gained 50 pounds. No wonder she's thrown in the towel and is now trying a diet that seems sinful. It's high in fat and low in carbohydrates. To do this she's had to get over the years of preaching that says fat is bad. "I can't eat that fat. If I eat that fat, I'm going to get fatter. I'm already fat. You have to de-program yourself to think in a different way, that maybe something else is going to work," said Noreen Hunter a constant dieter. In a stunningly provocative New York Times magazine article science writer Gary Taubes attacks what he considers the bad science that's lured millions to low fat diets. He asks: What if fat doesn't make you fat? What if it's all a big fat lie? "What we believe to be true with such certainty could just be sort of mass delusion, a wishful thinking that the medical establishment inflicted on us. And it's just snowballed," said Taubes. The theory was that a low fat-high carb diet would help control weight and prevent killer diseases. Unfortunately , most of the studies that followed did not show a direct link between fat in the diet and heart disease or cancer. But by that time it was too late, not even science could prevent the prevailing wisdom that fats were bad and carbs were good. Dr. Walter Willett, chairman of the dept of nutrition at the Harvard School of Public Health, says following the low-fat high-carb diet of the food pyramid can make it difficult to control weight. It could even be dangerous for some people. "We have good evidence now that high intake of refined starches and sugars will increase riks of diabetes and heart disease," said Willett.