<p>“which is more unhealthy: sugar or fat?”</p>
<p>Sugar by a mile. Fat is actually a necessary part of a good, balanced diet (and, believe or not, is especially necessary if you’re looking to lose weight). This of course applies to unsaturated “good” fat, such as Omega-3 and Omega-6 that is found in fish, nuts, olive oil, etc. Saturated fat and sugar, on the other hand, have absolutely no nutritional value and are a part of the human diet simply because they serve to make foods more palatable. A good diet will a) eliminate simple carbohydrates (sugar, white bread, white rice, etc) to as great an extent as possible, b) prioritize complex carbohydrates (specifically those in whole grain and vegetables) and protein, c) include some unsaturated (and, inevitably, very small amounts of saturated) fat. Chances are if you stick to foods that fall within those guidelines, you won’t gain any appreciable amount of weight. On the other hand, if you are already physically fit (say 10-14% body fat), you could get away with eating a good amount of junk as long as you supplement it with daily rigorous exercise.</p>