(Reuters) – women who use tanning salons have one somewhat higher risk of skin cancer, according to a U.S. study that adds that over-exposure in a tanning machine can be just as bad as burning sun.

The study, conducted by a team of Harvard Medical School, analyzed data of about 730,000 US nurses who followed for 20 years and found that women using tanning machines in his youth were more likely than others to develop skin cancer – in particular, carcinoma basal cell.

Although many studies have linked machines tanning with a higher risk of cancer, the linkage with a basal cell carcinoma, the most common type of cancer, has been inconsistent.

Jiali Han and his companions “Us… investigate if the frequency with which used tanning machines during the Institute or college and between 25 and 36 years was associated with a risk of basal cell carcinoma, melanoma and squamous cell carcinoma”, wrote in the Journal of Clinical Oncology.

“Our data provide evidence of a relationship of dose response between the usage of the machine of tanning and the risk of skin cancer, especially basal cell carcinoma, and the relationship is higher for patients who were exposed to a younger”.

Women who used machines bronzing at least four times a year between the Institute and the 35 years were 15 percent more likely to develop basal cell carcinoma than those who not used.

Had similar risks associated with melanoma and the squamous cell carcinoma, a type of cancer has a high cure rate as well as the basal cell. But with melanoma findings were not statistically significant, which means that they could be due to chance.

During the study of 730,000 women, only 349 were diagnosed with melanoma, the deadliest skin cancer type. Compared with 5,500 diagnosed with basal cell carcinoma.

“This is a great well done study supports previous findings that artificial tanning is associated with the development of melanoma and squamous cell carcinoma,” said June Robinson, research professor in dermatology at Northwestern University in Chicago, who was not involved in the study.

Source: http://bit.ly/wMt9Z4