Taking fish oil regularly can reduce the risk of breast cancer, a new study has found.

The research revealed that postmenopausal women who took the supplements reduced their risk by a third.

The study involved 35,000 women and took six years to complete, reports the Daily Express .

Fish oils contain high levels of fatty acids that can reduce inflammation.

Previous studies have suggested that they may boost brain cells, keep eyes healthy and possibly protect against ageing.

The latest study, by a respected team in America, is the first to actively monitor women who take fish oils and see how many develop breast cancer.

The team, from the Fred Hutchinson Cancer Research Center in Seattle, said the findings were interesting but it was too early to say if the fish oil is responsible.

Scientists believe fish oils might work by reducing inflammation, which may prevent cells from becoming damaged and turning cancerous.

The findings have been published in the Journal of Cancer, Epidemiology, Biomarkers and Prevention.