Analogia Malenga
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- Feb 24, 2012
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Watafiti katika Taasisi za Kitaifa za Afya wanashauri kwamba utumiaji wa bidhaa fulani za nywele zinaweza kusababisha saratani ya matiti.
Baada ya kusoma zaidi ya wanawake 46,000 huko Maekani, waligundua kuwa wanawake wanaotumia dawa za nywele za kudumu na viini vya kemikali (relaxers) huongeza nafasi zao za kupata saratani ya matiti kwa hadi 60%.
Kulingana na utafiti huo, uliochapishwa katika Jarida la Kimataifa la Saratani, kuna tofauti za hatari kulingana na rangi ya muhusika, huku weusi wakiwa katika hatari kubwa.
Wakati wanawake wazungu ambao walifunga nywele zao mara kwa mara wanakabiliwa na uwezekano wa 7%, wanawake weusi wanakabiliwa na hatari kubwa - 45%.
Linapokuja suala la matumizi ya 'makubwa' yamadawa ya nywele (angalau mara moja kila wiki 5-8) utafiti ulionyesha hatari 8% ya wanawake wazungu na 60% kwa wanawake weusi.
Alexandra White, Ph.D., mkuu wa Taasisi ya kitaifa ya Mazingira ya Sayansi ya Mazingira na Saratani ya Saratani na mwandishi mwandamizi wa utafiti huo alisema: "Katika utafiti wetu, tunaona hatari kubwa ya saratani ya matiti inayohusiana na utumiaji wa rangi ya nywele, na athari ina nguvu kwa wanawake wa Amerika weusi, haswa wale ambao ni watumiaji wa mara kwa mara. "
Hii sio mara ya kwanza sayansi kufanya uvumbuzi wa kutisha kuhusu bidhaa za nywele ambazo mara nyingi huwa na kemikali zaidi ya 5, 000. Baadhi zinaweza pia kupatikana katika viwandani na moshi wa tumbaku ambazo zote zina athari mbaya kwa mwili.
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Breast cancer is one of the leading causes of death in women. Researchers are proactively searching for the causes of the deadly disease and a new study has found one of the culprits. According to a study published in the International Journal of Cancer, the risk of breast cancer is associated with more frequent use of chemical hair products. Researchers at the National Institute of Environmental Health Sciences found that women who use hair relaxers at least every five to eight weeks were about 30 percent more likely to develop breast cancer. Women who use hair dye alone are nine percent more likely than women who don’t use hair dye to develop breast cancer, the study says.
For black women who use permanent hair dye, the cancer risk increased drastically.
“Among African American women, using permanent dyes every five to eight weeks or more was associated with a 60 percent increased risk of breast cancer as compared with an eight percent increased risk for white women.”
The Sister Study, which is a research effort dedicated to finding the causes of breast cancer, participants included 46,709 women and found that black women using these chemicals were at a much higher risk than other participants.
“Researchers have been studying the possible link between hair dye and cancer for a long time, but results have been inconsistent,” author Alexandra White, Ph.D., head of the NIEHS Environment and Cancer Epidemiology Group, said about the results. “In our study, we see a higher breast cancer risk associated with hair dye use, and the effect is stronger in African American women, particularly those who are frequent users.”
Hair chemicals aren’t the only cause of cancer and co-author Dale Sandler, Ph.D., chief of the NIEHS Epidemiology Branch, said much more research is needed to identify the other risk factors.
“We are exposed to many things that could potentially contribute to breast cancer, and it is unlikely that any single factor explains a woman’s risk. While it is too early to make a firm recommendation, avoiding these chemicals might be one more thing women can do to reduce their risk of breast cancer.”
The Sister Study is currently tracking the health of women between ages 35 to 74 whose sister had breast cancer that joined their study from 2003 to 2009 from the U.S and Puerto Rico.
