国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

您現(xiàn)在的位置: > Language Tips > Audio & Video > Special Speed News  
 





  Health: Looking for skin cancer
[ 2006-07-06 10:45 ]

I’m Faith Lapidus with the VOA Special English Health Report.

Skin cancer is one of the most common forms of cancer. The risk increases in summer because ultraviolet rays from the sun are the main cause of skin cancer. Tanning beds can also be high in UV radiation.

Anyone can get skin cancer, but people with light colored skin, hair or eyes are at greatest risk. A history of sunburns early in life also increases the risk. So does a family history of skin cancer.

The sooner skin cancer is found, the easier it is to treat. So doctors advise people to examine all areas of their skin once a month, from the top of their head to the bottom of their feet. Even look under the nails and between the toes.

Professional examinations are also important. See a doctor if a mole bleeds or itches or is bigger than six millimeters.

Knowing what your skin looks like will help you recognize any changes in the size, shape or color of growths. The Cleveland Clinic suggests taking pictures of moles and dating the images to compare over time.

The two most common forms of skin cancer are basal cell and squamous cell cancers. They can develop as flat, discolored areas or as raised growths, often with a rough surface.

Melanoma is far more dangerous. Melanomas can appear even in areas of the body that do not get a lot of sun. They can be flat or raised and have areas of black, brown and other colors. Other signs include uneven borders or one half different from the other.

Without early treatment, deadly melanomas can quickly spread within the body.

Hats, sunglasses and clothing offer protection from harmful sunrays, but that can depend. Experts say the denser the weave of the material, the less ultraviolet radiation reaches the skin. Also, darker colors may offer more protection, and natural cotton can block more than bleached cotton. When clothing is wet or stretched, however, it lets more UV radiation pass through.

Choose sunscreen products and sunglasses designed to protect against both UV-A and UV-B rays. Experts at the Centers for Disease Control and Prevention remind people to put on sunscreen before they go outdoors.

Put a thick amount on all areas of skin that will get sun. UV levels can be high even on cloudy days.Put on more sunscreen if you stay in the sun for more than two hours, and after you swim or sweat a lot from activities.

This VOA Special English Health Report was written by Brianna Blake. To learn more about skin cancer, go to voaspecialenglish.com. I’m Faith Lapidus.


ultiviolet ray  : 紫外線

mole : 痣 

melanoma : 胎記瘤

(來源:VOA   英語點(diǎn)津姍姍編輯)

 
 
 




陇西县| 黄陵县| 永城市| 建瓯市| 东至县| 阿鲁科尔沁旗| 驻马店市| 巴林左旗| 洛隆县| 武胜县| 靖西县| 孝感市| 永城市| 邵阳县| 宁河县| 双鸭山市| 临泉县| 平果县| 大埔区| 东乌珠穆沁旗| 漠河县| 铜川市| 石景山区| 电白县| 佛教| 贡山| 天镇县| 清远市| 剑阁县| 环江| 虎林市| 大关县| 德安县| 赣州市| 基隆市| 明溪县| 林口县| 探索| 尼玛县| 上思县| 轮台县|