A study shows a diet rich in omega-3 fatty acids found in fish such as
herring, salmon and mackerel could prevent development of the deadly
disease.

The oils are also believed to be able to block the spread of existing
tumour cells, acting as a kind of treatment.

Leaders of a study say that just one three-ounce portion of fish a week
could reverse the effect of a deadly inherited gene which can cause an
aggressive form of the disease.

Their
findings showed that a high intake of omega-3 could reduce the risk of
developing prostate cancer by almost 6 per cent.

More than 35,000 men in the UK are diagnosed with the disease each year and 10,000 die from it.

Last night medical experts and nutritionists welcomed the study, which
backed previous research and suggests the fatty acids could mean the
difference between life or death.

Nutritionist Carina Norris said: “Hardly a month goes by without
scientists finding more benefits of fish oil. My advice to everyone
would be to get as much of it as possible.

“I would advise the use of supplements as hardly anyone in the UK eats
enough oily fish in their diets. I am reluctant to use the expression,
but I would say fish oil is the closest you can get to a superfood.”