Deadly catch: The raw fish that can cause liver cancer

The practice of eating raw fish is causing life-threatening health issues in certain areas of north-east Thailand.

Local fish populations are infected with a type of worm known as a fluke which, once consumed, migrates to the human liver.

Over many decades, the infestation causes inflammation and tissue damage that can eventually lead to liver cancer.

In men, liver cancer makes up less than ten percent of cancers worldwide. But in affected areas of Thailand, it accounts for more than half.

To help stem the tide of fluke infection, health workers have been trying a range of measures to change people's eating habits.

Jonathan Head reports.