Low carb clinical trial from Harvard

http://www.hsph.harvard.edu/review/review_fall_04/rvw_diet.html

Testing 1-2-3-4 What mix of carbohydrate, fat, and protein should people eat in order to lose weight, keep it off, and stay healthy? HSPH’s diet study will examine four possibilities.
15% Protein 20% Fat 65% Carbohydrates	25% Protein 20% Fat 55% Carbohydrates	15% Protein 40% Fat 45% Carbohydrates	25% Protein 40% Fat 35% Carbohydrates