A GREAT-great granny reveals how she has lived to be 120 ... by smoking CANNABIS every day.

Fulla Nayak – believed to be the world’s oldest woman – puffs “ganja” cigars and drinks strong palm wine in her cow-dung hut in India.

She lives with her 92-year-old daughter and grandson, 72, by the Indian Ocean.

Fulla said: “I don’t know how I’ve survived so long. Many relatives much younger than me have died.”