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Scientists have discovered two new genes that alter a woman’s chances of developing breast cancer.

One of the genes actually lowers the risk of getting the disease by about four per cent with one faulty copy and by 11 per cent with two faulty copies, according to the study published in Nature Genetics.

The other gene increases the risk by 12 per cent for one faulty copy and 23 per cent for women who carry two copies.

A powerful genetic test for breast cancer could be a step closer following this discovery, said Dr Lesley Walker, director of cancer information at Cancer Research UK.

He added: "If we can identify women who are more likely to get the disease and if we can work out how high this risk is, doctors can make informed decisions about how to stop them getting breast cancer in the first place."

This new research could also be good news for women trying to obtain breast cancer insurance.

Women can reduce their risk of developing breast cancer by making lifestyle changes, such as stopping smoking, drinking less alcohol and taking more exercise.

The Insurance Helpline specialises in obtaining cover for people living with breast cancer.

This entry was posted on Monday, March 30th, 2009 at 3:00 pm and is filed under Cancer.