Controlling our appetites: Does biology defeat reason?

LIFE is full of mystery, some interesting, some just quirky.

How can two people with little or nothing in common, on the face of it at least, sustain a solid, life-long, fulfilling relationship? Is there life on Mars? Where are the Irish crown jewels? The third secret of Fatima? Marmite?

And, as so many of us, unfortunately, have had to accept, what drives an individual’s appetite? What makes someone who has already enjoyed a good meal eat more than is prudent? Is it a kind of insecurity, a need for some deep, visceral reassurance during the shortening days of early winter?