Is it the fat or the sugar in your diet that is causing harm? Here's an interesting article and historical account of that question - going through everything from the great fat-scare in the mid-20th century to the impact of pioneering journalist Gary Taubes:
The New Yorker: Is Fat Killing You, or Is Sugar?However, beware of the not-so-up-to-date conclusion to eat everything in moderation. This conventional and "common sense" piece of advice has failed miserably for decades, illustrated by the exploding disasters of obesity and type 2 diabetes.