This seems like pretty terrible science. Correlation does not imply causality.
All that they did was observe that people who happen to drink diet sodas also happen to have a (slightly: 2.11cm vs .78 cm) higher increase in waistline. They didn't control for caloric intake, it wasn't doubly-blind, the choice of amount of diet soda consumption was self-selected.
This would be analagous to finding that people who are on diets are fatter than people who are not, and writing a headline saying "Dieting makes you fat."
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[ 3.6 ms ] story [ 10.0 ms ] threadAll that they did was observe that people who happen to drink diet sodas also happen to have a (slightly: 2.11cm vs .78 cm) higher increase in waistline. They didn't control for caloric intake, it wasn't doubly-blind, the choice of amount of diet soda consumption was self-selected.
This would be analagous to finding that people who are on diets are fatter than people who are not, and writing a headline saying "Dieting makes you fat."
Link to abstract: http://ww2.aievolution.com/ada1101/index.cfm?do=abs.viewAbs&...