| Women want the dye to be present on the hair, but | | | | women who dyed their hair one to four times a year |
| not on the scalp. Among women with other slow | | | | had a greater risk to develop ovarian cancer. Women |
| genes (the "CYP1A2 slow" phenotype), exclusive | | | | who smoke and use permanent hair dyes have an |
| permanent hair dye use was associated with a | | | | even higher risk of cancer. |
| 2.5-fold increased risk. | | | | More studies might look at the risk of cancer from |
| Large epidemiological studies show no elevated health | | | | exposure to hair dye at work, which the researchers |
| risk for women using hair dyes. Now, an equally | | | | excluded from this analysis. For hematopoietic |
| important part of the study is those women who | | | | cancers, studies found a slightly increased risk of |
| were not at increased risk despite using the hair dye. | | | | cancer in people who had used hair dye. For bladder |
| It state that women who used permanent hair dye | | | | cancer and breast cancer, the results indicate that |
| once a month had a 25% higher rate of bladder | | | | there was no effect of hair dye use on cancer risk. |
| cancer. | | | | Risk of salivary cancer increased three times in hair |
| Women who dye their hair might be different from | | | | dye users and risk of brain and ovarian cancer almost |
| the average woman in many ways. Those women | | | | doubled. Personal use of hair dyes and risk of cancer: |
| have turned to at home hair dye kits. I heard of | | | | a meta-analysis. The researchers found no strong |
| women going bald from over-dyeing their hair, or | | | | evidence of a link between personal hair dye use and |
| braiding it. The study of 1,300 women claims that | | | | an increase in cancer risk. But researchers have not |
| those who started dyeing their hair before 1980 | | | | been able to find a clear link between using hair dye |
| were one-third more likely to develop NHL. The | | | | and cancer risk, including the risk of breast cancer. |
| researchers did not find any larger risk of cancer in | | | | Take-home message. This study supports previous |
| women who started using hair dye later than 1980. | | | | research that found no link between hair dye use and |
| The exception was women who used black hair dye | | | | increased risk for breast cancer. |
| for more than 20 years. Another study found that | | | | |