Diet Soda Is Indirectly Fattening

[In] a continuing study of elderly Mexican and European Americans. The result: Diet soda drinkers saw a 70% increase in waist circumference compared with non-drinkers over the course of a decade. People who drank more than two diet sodas a day saw a staggering 500% greater waist circumference compared to non-drinkers.
(474 people studied for a decade; usual correlation disclaimers - fat people might replace real soda w/ diet, etc. - but I believe it’s causal)