Letter: Shopping and eating

I was bemused by Jeremy Laurance's article (Fighting the flab: it ain't what you eat, or is it?, 30 January). A much cheaper way of conducting their research would be for scientists to stand at supermarket checkouts and observe the contents of fat peoples' shopping trolleys - an abundance of crisps, snacks, chocolate bars, fizzy drinks etc. If that is not convincing enough, I suggest they study these people munching their way through the contents of their trolleys on the way to the car park.

S C COELHO

Teddington, Middlesex