Someone lent me a copy of 'You are What you Eat' by Gillian McKeith. It was also a TV prog too I believe. I've just skimmed through it as I feel it is rather an extreme diet regime.
She discusses how to look out for signs of health/illness. One way is to examine the tongue. Apparently you shouldn't have a groove or 'crack' as she calls it down the middle of your tongue. I have this but am healthy and don't have any stomach problems. I think this is rubbish and it was one of those things you either have or don't have. So just thought I'd do a quick survey here. Thanks.