I recently came across an article about the effects of sugar and fat to your body and how this affects your weight loss.
When starting on a new diet regime everyone has their idea on how to lose weight; no carbs after 5, no fat, no sugar, raw until 4, run 10km a day - the list goes on. But I'd say the most popular thing we have been told is to cut out carbs (including sugar) or to go on a low fat diet.