Even if was only pleasure were seeking, then why did the mice not seek SEX?
Surely, sex is more pleasurable than food!
And does this imply that pleasurable things like sex cause obesity?
As a final point, one should not get too excited about these studies because ghrelin is not the only factor involved in controlling the appetite center. Previous work has shown that the gene GAD2 has been linked to obesity and it can stimulate certain chemicals in the brain which lead to over eating. Others have shown that the neurotransmitter dopamine is also linked to over eating.
Asides from genetics, our eating habits and supersizing are other factors. Our life style has become to sedentary and we all love to eat great tasting food.
All this hormone stuff is too complex- to lose weight one should walk more and eat less.
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