防不勝防的健康危害因子
婦女怕曬黑,因此出外必先擦防曬乳;很不幸地,美國化學學會指出 2012 年環境科學與科技期刊的論文研究發現,防曬乳及保養品由於含有可幫助對抗紫外線「二苯酮( Benzophenone )」成份,但「二苯酮」會模擬女性雌激素作用,有可能增加女性罹患子宮內膜異位症風險( Scientists are reporting a possible link between the use of sunscreen containing a certain ingredient that mimics the effects of the female sex hormone estrogen and an increased risk of being diagnosed with endometriosis,…. )。 同年,美國密蘇里大學科學與科技期刊( Missouri University of Science and Technology )的研 究顯示,粒子越小的如 microfine zinc oxide 或更小的 nano zinc oxide 氧化鋅陽光的照射下,會釋出不穩定的自由基,自由基進而與其他分子結合時出現損害細胞的現象。照射時間愈長,愈有可能被肌膚吸收,間接影響及損害人體細胞而增加皮膚癌的可能( But researchers at Missouri University of Science and Technology are discovering that sunscreen may not be so safe after all. Cell toxicity studies … suggest that when exposed to sunlight, zinc oxide, a common ingredient in sunscreens, undergoes a chemical reaction that may release unstable molecules known as free radicals. Free radicals seek to bond with other molecules, but in the process, they can damage cells or the DN