About Health - The yellow spice gives curries their bright colour An extract found in the bright yellow curry spice turmeric can kill off cancer cells, scientists have shown. The chemical - curcumin - has long been thought to have healing powers and is already being tested as a treatment for arthritis and even dementia. Now tests by a team at the Cork Cancer Research Centre show it can destroy gullet cancer cells in the lab. Cancer experts said the findings in the Br