Swallow your chewing gum? Experts warn it raises risk of a gruesome medical condition… which also hits girls who chew their hair

Swallowing chewing gum could leave you with a bizarre and distressing medical condition, experts warn.

It can accumulate in the digestive system and harden, forming a ‘stony mass’ called a bezoar, they say — and chewing other indigestible substances, such as hair, can also increase the risk.