Your saliva is possibly not something you have given much thought to – but it plays a vital role in maintaining good health, says Gordon Proctor, a professor in salivary biology at King’s College, London.
‘Saliva is a remarkable substance. It might be 99 per cent water, but it is far more than that,’ he says.
In fact, saliva carries the same bacteria found in your gut, as well as powerful substances that fight germs and promote wound healing – which might be why we instinctively pop our finger in our mouth if we cut or graze it.
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