How Good is the Evidence?
A type of study known as the case-control study is the source of most of the evidence. Two groups of women are recruited by researchers for these studies. The women of one group are with ovarian cancer (called ‘cases’) and the women of the other group are without ovarian cancer (called ‘controls’). They ask the women to recall whether they used talcum powder in the past, and if so, how often and how it was used. We cannot know from these studies that ovarian cancer is caused by the use of talcum powder but we can know if those women are likely to develop ovarian cancer who report using the powder in the genital area. Of course, the guarantee cannot be given on 100% accuracy of women’s memories. However, many women are very sure of whether they used talcum powder or not because using talcum powder is a somewhat memorable experience. Similar increases in ovarian cancer among the powder users are found in most of the case-control studies of talcum powder in many countries. If you want more clarification about this matter, you can consult the best cancer doctor.
Within the World Health Organization (WHO), a well-respected agency is The International Agency for Research on Cancer (IARC). IARC came to a conclusion that among women who reported using talcum powder in the genital area, there was an “unusually consistent” increased chance of developing ovarian cancer. It has also classified that some talcum powders contain the carcinogenic chemical asbestos. From two studies published in 2016, the African American Cancer Epidemiology Study (AACES) and the New England Study, some of the most convincing evidence comes.
584 African American women in 11 different geographic regions in the U.S. who had been diagnosed with ovarian cancer were compared to 745 women of the same age and geographic location by the AACES study. The use of talcum powder is common in this study. 53% of the healthy women said they had used talcum powder and about 63% of women with ovarian cancer said they had used talcum powder. It is found that those women were significantly more likely to have been diagnosed with epithelial ovarian cancer who used talcum powder anywhere in the body, used talcum powder on their genitals and elsewhere or had used talcum powder only in the genital area. Those women were about 44% more likely to have been diagnosed with ovarian cancer who reported using talc in the genital area, whether or not they used it anywhere else. It has been found that inflammation is developed in the body by talcum powder. This inflammation is the potential cause of the growth of cancer cells.