官方APP下载:英语全能特训(微信小程序版,支持苹果手机、安卓手机)
创办于2003年
UNSV记不住?那就记中文谐音“忧安思危”吧!
  Slow and Steady Wins the Race!
UNSV英语学习频道 - Slow and steady wins the race!
英语全能特训(微信小程序)
UNSV英语学习频道淘宝网店
客服短信:18913948480
客服邮箱:web@unsv.com
初级VIP会员
全站英语学习资料下载。
¥98元/12个月
终身VIP会员
一次购买,终身使用。
¥2990元/终身

HEALTH & LIFESTYLE - Sunscreen's Chemicals Go Through Skin to Bloodstream

阅读次数:


VIP会员专享下载:(非VIP会员无权下载!如果想下载,但还不是VIP会员,请点此订购
下载方式:使用鼠标右键(注意是鼠标右键!)点击下面的MP3音频/MP4视频链接,然后选择“另存为…”。
MP3节目录音 MP3节目录音 
文章原文
同步字幕

The active chemicals of commonly-used sunscreens end up in a wearer's blood. The U.S. Food and Drug Administration, or FDA, reported recently that the chemicals are present at much higher levels than current government health rules permit. For this reason, the researchers call for more safety studies.

From sunburn to skin cancer protection

Sunscreens were first sold to prevent sunburn and did not have to meet many government regulations. Now they are widely used to block radiation from the sun that can cause skin cancer, the most common kind of cancer in the United States.

To test some of the effects of sunscreen, researchers worked with 23 volunteers. They tested four forms of sunscreen by putting it on most of the volunteers' bodies four times a day over four days. Then, they did blood tests over seven days to find the levels of certain chemicals absorbed into the volunteers' blood.

The study looked for the chemicals from sunscreen in plasma, the watery part of blood that contains blood cells. It found four chemicals to be well above the level at which FDA guidelines call for further safety testing. They are avobenzone, oxybenzone, octocrylene and in one sunscreen, ecamsule.

The effects of plasma concentrations above the FDA's limit is not known. The research team wrote in the Journal of the American Medical Association (JAMA) that there must be more studies on how the chemicals affect humans.

FILE - There are several sunscreen applications to choose from, sprays, dry oils, powders and even wipes. (AP File Photo/Mary Godleski)
FILE - There are several sunscreen applications to choose from, sprays, dry oils, powders and even wipes. (AP File Photo/Mary Godleski)

Keep using sunscreen to protect skin from the sun

But these results do not suggest that people should stop using sunscreen to protect against the sun's harmful ultraviolet (UV) rays, researchers said.

Two researchers added their opinion in an article that followed the report. Robert Califf and Kanade Shinkai said the fact there were high levels of the chemicals in blood does not mean they are unsafe.

'The study findings raise many important questions about sunscreen and the process by which the sunscreen industry, clinicians, specialty organizations, and regulatory agencies evaluate (its) benefits and risks."

David Andrews is a senior scientist at the nonprofit health and environmental advocacy group Environmental Working Group. He called for thorough testing of sunscreen ingredients.

'For years the sunscreen chemical manufactures have resisted common sense safety testing for their ingredients and now FDA is proposing that these common ingredients must undergo additional testing to stay on the market,' Andrews said.

However, the Personal Care Products Council trade association pointed out some problems with the study. They fear that people may not understand it well and could stop using sunscreen.

The volunteers in the study put on two times as much sunscreen as people usually apply in everyday use, said Alexandra Kowcz, the group's chief scientist.

I'm Jill Robbins.

Manas Mishra reported on this story for the Associated Press. Jill Robbins adapted it for Learning English. Kelly Jean Kelly was the editor.

Quiz - Sunscreen's Chemicals Go Through Skin to Bloodstream

Start the Quiz to find out

Start Quiz

Words in This Story

sunscreen – n. a lotion that you put on your skin to prevent sunburn by blocking out some of the sun's rays

regulation – an official rule or law that says how something should be done

absorb v. to take in (something, such as a liquid) in a natural or gradual way

clinician n. a person (such as a doctor or nurse) who works directly with patients rather than in a laboratory or as a researcher

evaluate v. to judge the value or condition of (someone or something) in a careful and thoughtful way

benefit n. something that produces good or helpful results or effects or that promotes well-being

advocacy n. the act or process of supporting a cause or proposal

ingredients n. one of the things that are used to make a food or product

apply v. to lay or spread on

certain adj. known but not named

Do you use sunscreen? Do you know what chemicals it contains? We want to hear from you. Write to us in the Comments Section.

网友的学习评论(0条):
版权所有©2003-2019 南京通享科技有限公司,保留所有权利。未经书面许可,严禁转载本站内容,违者追究法律责任。 互联网经营ICP证:苏B2-20120186
网站备案:苏ICP备05000269号-1中国工业和信息化部网站备案查询
广播台