Quote:
Originally Posted by gobbla
In the study the rats gaining weight WERE eating more than the rats that weren't gaining weight. It's not an assumption.
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It
was observed that the rats were eating more, but that doesn't mean that accounts for 100% of the weight gain effect.
Also, one might
speculate that something that physiologically (not psychologically) makes a rat want to eat more is having some kind of physiological impact on its metabolism. Not something that was examined in the study but certainly something that could be tested -- on rats as well as humans.
In terms of talking about human willpower, it seems that most people use artificial sweeteners to satisfy a craving for something sweet. So even if 100% of the weight gain effect is that it makes you (if you are a rat) want to eat more, why would you eat something to satisfy a craving (the food containing the artificial sweetener) that causes more cravings?