"Even so, it is not definitive evidence that sugar-sweetened soft drinks increase the risk of Type 2 diabetes, other than through their effect on bodyweight, " he added.
The authors cite one possibility for this slight increase in that those losing weight with lorcaserin were exposed to a somewhat greater dose per unit of bodyweight.
The study shows that if you increase drinking sugary beverages by one serving per day, it will lead you to gain an additional pound of bodyweight over four years.