I spend a lot of time trying to boil down bodily functions to the evolutionary imperatives behind them. This is a really interesting idea, but I think equally

I spend a lot of time trying to boil down bodily functions to the evolutionary imperatives behind them. This is a really interesting idea, but I think equally valid is the notion that a hunter gatherer really is only seeking out short term gain. I think people are very drawn towards immediate, stark energy, which is why sugar and simple carbs are such an epidemic. Overeating seems like a byproduct of avoiding scarcity. I definitely believe that people crave certain things given certain nutritional deficiencies, though.