> Individuals in the study were instructed to eat either low-fat or low-carbohydrate diets— about 1,200 to 1,500 calories per day for women and 1,500 to 1,800 for men.

If they're splitting groups, why didn't they bother having a control group with no diet change and only the study follow-up ?

I couldn't see any link to the actual study, was there more details ?