The scholar and the world! The endless strife,
The discord in the harmonies of life!
The love of learning, the sequestered nooks,
And all the sweet serenity of books;
The market-place, the eager love of gain,
Whose aim is vanity, and whose end is pain!
Longfellow, Morituri Salutamus
Why are some people healthier than others? This might sound like a bit of silly question. The answer is surely obvious: some people eat better and exercise more than others. But is that all there is to it? Couldn’t ‘healthiness’ be attributed, at least in part, to our genes? Might some of us be born with a…