A study at Indiana University showed that women with 15 or more moles on a single arm were 35 percent more likely to develop the disease.
Terms of absolute risk, 11.4 per cent of women with 15 or more moles on their arm were found signs of the disease.
The researchers say that the main reason is the higher levels of the hormones estrogen and testosterone in the blood.
As some cancers are fuelled by sex hormones.
Scientists have obtained results from analysis data 74 523 U.S. nurses and 89 902 teachers of French for over 20 years.
Source: nauka24news.ru/