九乡新闻网雨轩传txt下载:最新研究：痣越多，越健康
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最新研究：痣越多，越健康
http://www.sina.com.cn 2010年11月23日 17:45 环球时报Men and women with more moles are less likely to develop osteoporosis and look up to seven years younger than their true age, according to researchers from King's College London. Other suspected benefits include tauter muscles and healthier eyes and heart, which outweigh the risk of skin cancer linked to the presence of moles。
Researchers looked at 1,200 non-identical female twins aged between 18 and 79 and found that those with more than 100 moles were half as likely to develop osteoporosis as those with fewer than 25.
People with lots of moles are known to produce white blood cells with unusually long telomeres, a part of DNA which allows it to replicate, preventing deterioration. The longer it is, the more time before it starts to degrade。
They believe these findings could pave the way for a cream which "switches off" wrinkles, doing away with the perceived need for collagen injections or plastic surgery。
Moles are the result of rapidly dividing cells which produce a dark pigment in the skin, usually in childhood. They often begin to disappear from middle age but in some people they continue to spread。
英国《每日邮报》22日报道，伦敦国王学院的研究人员近日称，黑痣越多的人越不易得骨质疏松症，且比真实年龄看起来年轻7岁。研究人员还称，黑痣带来的好处可能还有紧绷的肌肉、良好的视力以及健康的心脏，与这些优点相比，“黑痣可能与皮肤癌相关”的说法似乎不足一提。
研究人员调查了1200对年龄为18到79岁的异卵女性双胞胎，结果发现，相比身上少于25颗黑痣者，长有100多颗黑痣者患骨质疏松症的概率更低。
原来，长有较多黑痣者体内的白细胞端粒(在染色体端位上的着丝点)更长，而端粒能够使得脱氧核糖核酸不断复制，以防老化。端粒越长，老化速度越慢。
研究人员认为这些新发现可为“去皱霜”的研制开辟新道路，同时打消人们注射胶原蛋白、做整形手术的念头。
据了解，黑痣是可分泌暗沉色素的某种皮肤细胞快速分裂的结果，常见于人类幼年阶段。黑痣往往消失于中年时期，但也可能持续扩散。