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FILE NAME: Talc (TALC) DATE: 2016 DOC#: TALC132 DOCUMENT DESCRIPTION: NHS Report - Talc and Ovarian CancerWhat the Most Recent Evidence Shows Tak-anS ovarian cancer: what the most recent evidence shows - Healt. http://www.nhs.uk/news/2016/03March/Pages/Talc-and-ovarian-cance. ms Your health, your choices Talc and ovarian cancer: what the most recent evidence shows Behind the Headlines Tuesday March 8 2016 Talc can get into the upper genital tract sx r s mrecent study iook,n9 at whethertaicum ^ * -* uTemen Wi,h Varian Can er and a Simila" SIZed C0n,r01 9r0UP Wh0 were free 0f disease- 0veral1' the* found a 33% increase In the When subdividing the groups by frequency of talc use and use of hormone replacement therapy, the link strengthened. However, caution must be taken in interpreting these risk estimates as they are based on much smaller sample sizes and may be unreliable By design, the study is not able to prove cause and effect It appears people were asked about talc use after their cancer diagnosis, which may introduce recall bias It also can't determine whether the use of talc or ovarian cancer occurred first. Various unmeasured health and lifestyle factors may also be involved in any link. The International Agency for Research on Cancer has classified genital talc as a possible cancer-causing agent (carcinogen). To date, there have been mixed findings from research in the area. Further research in the form of good-quality prospective studies would be required to confirm this. M a p 's ^ ^ s a^d ^anfe ^ics.1116"^ USi" 9 Plai" ' Unperfumed SOaps to wash the area around the va9'na <the vulva>3"y every day, as opposed to talc or perfumed Read more about vagina health Where did the story come from? i l l ydr WaS arned MUtnby re.S! aT^ers f r Brigham aed Women's Hospital in the US, and was funded by the US National Institutes of Health the Department of Defense Congressionally Directed Medical Research Programs, and the Department of Obstetrics and Gynecology. P It was published in the peer-reviewed journal Epidemiology on an open access basis, so it is free to read online Ird e m r ito lT iy o 'm tn Wt the hheaHlln!? n Wbecause f a h|9h-Pro,lle court case In the US, where talc manufacturer Johnson and Johnson has been ordered to pay $72m to the family of a woman who died from ovarian cancer. The family alleged her ovarian cancer was caused by her use of talcum powder There are reports the company is planning to appeal against the decision, and it maintains there is no evidence to support the allegation. The Mail Online's reporting of the study was accurate and outlined the Inherent limitations of the research What kind of research was this? This case-control study aimed to investigate the association between talc use and ovarian cancer, comparing women diagnosed with cancer with healthy controls. There are said to have been a number of studies that have investigated this link before, but none were able to prove a link. This study is still only able to find a link and cannot provide conclusive findings. ' It seems to have questioned women about their talc use after they were diagnosed with cancer, which may have introduced recall bias - women with ovarian cancer may be more likely to remember using talc. Other unmeasured health and lifestyle factors (confoundersl may also be Influencing the link. What did the research involve? This study used participants involved in the Nurses' Health Study an ongoing cohort study. Data was collected in three phases* 1992-97 1998-2002 2003-08 This study combines the data from all three phases. Cases diagnosed with ovarian cancer were identified through tumour boards - the US version of NHS multidisciplinary teams - and medical records. Controls wore identified though random digit dialling, driver licence lists, and town resident lists Matching of cases and controls was by five-year age groups and region of residence. J a r s Interviews were conducted to identify potential ovarian risk factors that occurred more than one year before diagnosis for cases Controls were also interviewed. Participants were asked whether they used talcum powder on the genital or rectal area, sanitary products, underwear, or other areas "regularly" or "at least monthly". Information was also gathered on the type of powder used, when they started using talc, years used, and the number of times talc is applied each month. Lifetime 1 di 3 29/05/2016 20:04 *TaJc*aifti ovarian cancer: what the most recent evidence shows - Healt... http://www.nhs.uk/news/2016/03March/Pages/Talc-and-ovarian-cance. exposure was calculated. Partners' talc use and condom and diaphragm use was also recorded rFecoidedSt0ry ' Varia" " premenopausal breast cancer' use of hormone replacement therapy, and dietary intake (from a food frequency questionnaire) were also Statistical analyses were performed to draw associations and adjust for confounding variables. What were the basic results? Taghee, usstuedoyf cgeenntirtea,l taanlcd wphaassaes. sociated with a 33% increased risk of ovarian cancer (odds ratio fOR! 1.33, 95% confidence interval rcn 1 1fi tn 1.52) after adjustment for Women who used talc were more likely to be: older heavier asthma sufferers regular painkiller (analgesic) users The researchers further divided the groups into their menopausal status, use of hormone therapy, and frequency of use. Findings appeared to show risk increased with increasing use of talc, either by frequency of use each month or years of application. p o T q w rU|SM pind f in9 h rmone ,heraPy. wh0 had more than 24 years of talc use were at the highest risk of ovarian cancer (OR 2.33, 95% Cl [1.32 to 4.12] and OR 2.57, 95% Cl [1.51 to 4.36] respectively). How did the researchers interpret the results? The researchers concluded that, 'Risk for ovarian cancer from genital talc use may vary by histologic subtype, menopausal status at diagnosis, [hormone therapy] i weight and smoking " They suggest the link may involve a combination of hormone activity and the immune system giving an inflammatory response to talc. Conclusion This case-control study aimed to investigate the association between talc use and ovarian cancer. The researchers found a significant link between qenital talc use and ovarian cancer - an increase in risk of a third, compared with no use. However, the study has important limitations and is not able to prove direct cause and effect. Although this was a case-control study that made use of data collected as part of an ongoing cohort study, talc use only seems to have been assessed after cancer diagnosis. The study says that, "subjects were personally interviewed about potential ovarian cancer risk factors that occurred more than one year before diagnosis" There is therefore a possibility that women recalled their talc use inaccurately, leading to misclassification of use. The study also cannot determine whether the use of talc or ovarian cancer occurred first. Additionally, while the researchers attempted to control for various confounders that may be influencing the link. It is possible these were not fully accounted for and other health and lifestyle factors may have been missed. ' Another note of caution: the researchers found even higher cancer risk with higher frequency of talc use and use of hormone therapy However, these analyses were based on much smaller sample sizes. For example, the 2.33 risk increase for premenopausal women using talc for more than 24 years involved just 41 cases and 21 controls. When subdividing the overall study sample into smaller groups based on different characteristics, the resulting risk estimates are more likely to be inaccurate. The most reliable figure in this study is the overall 33% risk increase that has used the full study sample, simply assessing past talc use or not. That being said, the study's findings are in line with other reliable sources - the International Agency for Research on Cancer has classified genital talc as a possible carcinogen. So far, there have been mixed results from other studies assessing the link. Further research in the form of good-quality prospective studies would be required to confirm this. It is plausible that talc could work its way up into the upper genital tract and have some type of biological impact A recent review hv the American Cancer Snnietv recommended that women use cornstarch-based cosmetic products instead. Analysis by Bazian. Edited by NHS Choices. Follow NHS Choices on Twitter. Join the Healthy Evidence forum. Analysis by Bazian Edited by NHS Choices Links to the headlines .Taic 'IS linked to ovarian cancer'- Risk of disease is ONE THIRD higher for women who use talcum powder on their genitals, experts warn. Mail Online, March 4 2016 Links to the science Cramer DW, Vitonis AF, KL Terry, et al The association between talc use and ovarian cancer: a retrospective case-control study in two US states Epidemiology. Published online December 17 2015 Healthy Evidence forum Cause of depression9 I recently returned home from a 10 day break in the sun, and on going to turn.. 8 replies 1 ^ 1 Postherpetic Neuralgia 2 di 3 29/05/2016 20:04