你不知道的肤色“内幕” 黑种人不易患皮肤癌?

\n","userid":"wuyanli","media_url":"#","source_url":"http://jiankang.163.com","topicid":"00388049","stitle":"VDPF6A38I","boardid":"jiankang_bbs","replaceKeywordCount":5,"mtitle":null,"processPageData":"true","#":"http://jiankang.163.com","duty_editor":"吴延丽_NBJS6202","modelid":"0038gongkaike_mb","author":"","info3g":null,"adstr":"[an error occurred while processing the directive]","iscomment":"y","quality":90,"otitle":"","status":0,"hismod":false,"originalflag":0,"postid":"DQD22JIO00388049","title":"你不知道的肤色“内幕” 黑种人不易患皮肤癌?","pcommentid":null,"newsid":null,"nickname":"吴延丽","digest":"","navtopicid":null,"statement":"本文系网易原创稿件,版权属网易所有,未经授权不得转载,已经协议授权的媒体下载使用时须注明稿件来源:网易,违者将依法追究责任。","commentid":"DQD22JIO00388049","exe_editor":"王晓易_NE0011","hasad":false,"ptime":1535532276000,"setAdstr":false,"userinfo":null,"view_name":"网易健康","createtime":1535532276000,"source_city":"北京","statementtype":0,"docid":"DQD22JIO00388049","dkeys":"皮肤癌,晒伤,黑种,黑素,肤色","hideAd":false,"url":"https://jiankang.163.com/18/0829/16/DQD22JIO00388049.html","realname":null,"relatekey":"","buloid":"","sdigest":null,"photosetCovers":"","cnavbar":null,"channelConfigId":"0038","channelConfigName":"网易健康","channelConfigUrl":"http://jiankang.163.com/","channelConfigPathName":"健康频道","channelConfigHomeName":"健康首页","channelConfigPath2Name":"正文","channelConfigUrl2":"javascript:;\" target=\"_self","channelConfigLogo":"http://static.ws.126.net/f2e/health/post1301_ad/images/logo_health.png","channelConfigEndicon":"http://static.ws.126.net/f2e/health/post1301_ad/images/end_health.png"} -->
公开课模版测试文章(编辑别推)

李承新

中国人民解放军总医院皮肤科主任医师

皮肤癌的发生与晒伤有关吗?

紫外线照射以后,会使皮肤产生很多的黑素小体和黑素颗粒。这些黑素小体和黑素颗粒最主要的作用不是使皮肤变黑,而是保护我们的皮肤免受紫外线的损伤。皮肤晒伤带来的最大问题就是,表皮细胞当中的DNA受损。组织细胞的代谢生长过程中,DNA信息的复制是极其重要的一环,若DNA受损,就容易产生癌变。紫外线的照射会导致包括基底细胞癌、鳞状细胞癌和黑色素瘤等常见的皮肤肿瘤。

你不知道的肤色“内幕” 黑种人不易患皮肤癌?

不进行防晒护理可能会出现哪些后果?

黑种人比白种人的黑素颗粒多,因而黑种人发生皮肤癌的几率就要比白种人小很多。换句话说,防晒有利于防止皮肤癌的发生。

你不知道的肤色“内幕” 黑种人不易患皮肤癌?

长期的晒伤不仅会导致皮肤癌的发生,还会导致皮肤的良性肿瘤。比如良性的表皮增殖、老年斑、毛细血管扩张,还会导致胶原纤维的变性、光老化等。这些都会加速皮肤的老化,使我们看起来比实际年龄更老一些。

更多相关视频:

夏日难题!为什么太阳光能把人的皮肤晒黑?

##文末来源+编辑署名

吴延丽 本文来源:网易健康 责任编辑:吴延丽_NBJS6202