Bernard O'Shea: I tried mastic gum and it cured my hearing loss — seriously 

I bought Mastiha Chios to help with bad breath, but it had an unexpected benefit 

Bernard O'Shea. Photograph Moya Nolan

I will wax lyrical about my mastication’s newfound benefits for anyone who will listen. I'll tell them of helpful Greek tree sap that has made me a better listener, Mastiha Chios.