www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Health

Lung cancer rising, but not from smoking

By Shan Juan | China Daily | Updated: 2017-08-11 08:22

Exposure to PM2.5 suspected, though proof requires more study, experts say

Chinese health authorities are trying to figure out the reason for the rapid rise in a form of lung cancer that develops deep in the lung and is not associated with smoking.

China has seen a sharp increase in the disease over the past 10 to 15 years, hitting groups traditionally not susceptible such as women and nonsmokers, said Xue Qi, deputy director of thoracic surgery at the Cancer Hospital Chinese Academy of Medical Sciences, also the country's National Cancer Institute.

"It might be related to the long-term exposure to air pollution, particularly PM2.5," he said, referring to particulate matter with a diameter of 2.5 microns or less.

China's top health authority has been watching people's health in relation to air pollution since 2013, said Mao Qun'an, spokesman for the National Health and Family Planning Commission.

"We need more research over a longer time to figure out the long-term health effects of air pollution," he said. "Cancer is developed over a long period, not overnight."

Latest cancer statistics from the government showed China recorded nearly 4.3 million new cancer patients in 2015, and more than 730,000 of them had lung cancer, accounting for nearly 36 percent of the world's total.

There are two major types of lung cancer - lung adenocarcinoma and squamous cell carcinoma, experts said. The latter is closely associated with smoking.

Of newly detected lung cancer patients each year, the cases of adenocarcinoma - involving more females and nonsmokers have exceeded that of smoking-related carcinoma, even though the smoking rate in China has not declined, Xue said, citing figures from the nation's cancer registry.

Ten to 15 years ago, squamous cell carcinoma took the lion's share of all lung cancer cases, roughly 60 percent, he said. "At that time, most of the sufferers were smoking males, who are at high risk."

The incidence of lung cancer has surged in recent decades.

For instance, in the 1960s the incidence of lung cancer in Guangzhou, Guangdong province, stood at 7 per 100,000 people. That surged to 70 per 100,000 in 2005, according to local health data.

Some lung disease experts suspect the rise might be related to PM2.5, but more research is needed to know for sure.

Xue said more government research funding and projects in the field are needed.

Internationally, small-scale studies have associated air pollution exposure with lung cancer, but a direct link has not yet been confirmed with large, long-term studies, he added.

Industrialized countries saw a rise in the proportion of adenocarcinoma before China, according to Xue, who said lung adenocarcinoma is now the most common type of lung cancer.

Squamous cell carcinoma has decreased over recent decades in Western countries due to an ever decreasing smoking population, he added.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 97免费在线 | 亚欧在线视频 | 国产精品黄页网站在线播放免费 | 影院亚洲| 日韩经典中文字幕 | 美女视频一区二区三区 | 国产综合在线观看 | 毛片免费在线 | 91精品成人 | 欧美综合图片一区二区三区 | 国内精品免费一区二区三区 | 亚洲人成一区二区三区 | 1级a的观看视频 | 午夜性福| 国产视频久久久久 | 最新亚洲国产有精品 | 国产免费久久 | 亚洲一级高清在线中文字幕 | 在线播放高清国语自产拍免费 | 成人亚洲在线观看 | 精品国产91久久久久久久 | 亚洲精品tv久久久久 | 美女黄频免费观看 | 亚洲性欧美| 九九免费精品视频 | 欧美成人一区二区 | 亚洲国产成人久久 | 日韩欧美特级毛片 | 亚洲最黄视频 | 久久狠狠一本精品综合网 | 亚洲成a人一区二区三区 | 一级片在线免费看 | 欧美大片国产在线永久播放 | 日本三级视频在线 | 日韩黄色在线 | 国产精品久久永久免费 | 无国产精品白浆是免费 | 抱着cao才爽免费观看 | 国产国语在线播放视频 | 久久国产免费观看精品3 | 黄色毛片一级 |