The past and present
In the distant past, these physiological factors obviously served the human race very well, else we won’t be around now. But that was during times when the quantity and variety of food was strictly limited and often in short supply. These days, we can satisfy practically every gastronomical craving we get and satisfy it almost immediately – and this can become our collective Achilles heel.
As we all know, the modern easy access to junk food is at least a partial explanation as to why diseases like diabetes are increasing and why obesity levels are soaring around the world – but actually, that is not the whole story.