The idea that a low-fat diet is the answer if you struggle with weight gain and/or have risk factors for heart disease is a persistent one. For the past 50 years, obesity and heart disease have steadily risen. The question is why? Are dietary fats really to blame? And if they are, which fats gave rise to these problems? It's unfortunate, but researchers have frequently failed to take into account the fact that not all fats are created equal. Some do harm, while others are vitally important for optimal health. Even more tragic, harmful and beneficial fats have been confused, leading to a situation where people are encouraged to eat the unhealthy ones and avoid the beneficial ones. In more recent years, a number of scientists have stepped forward to promote a healthier view of dietary fats. But trying to change public policy is a difficult task that often takes one or more decades.

Read full story...