Chinese pulmonologist Zhong Nanshan said on Saturday that PM2.5 not only increases the risk of lung cancer, but also can cause overall damage to the human heart and lung, the Guangzhou-based New Express reported.
Zhong said research on the relationship between PM2.5 and lung cancer has been done for dozens of years in Western countries, and results show lung cancer deaths would increase by 17 to 25 percent for each 10μg per cubic meter rise in the concentration of PM2.5.
A research report issued by the World Health Organization on Nov 17 said smog may cause bladder cancer as well, and current studies in China have found that particulate matters can enter the bloodstream and cause damage to the heart and lung, Zhong added.
However, China hasn't conducted any long-term research on smog's influence on human health. PM2.5 concentration in China is five times, or even 10 times, higher than in foreign countries' studies, Zhong said. "I would like to lead the research."
Japanese medical authorities are expressing concern
over prenatal testing for chromosomal abnormalities now offered by a
Chinese company because it does not require clients to undergo
counseling, which could lead to unnecessary abortions.
The Chinese company, BGI, recently entered the market and is
offering the service in Japan at less than half the cost charged at
facilities sanctioned by the Japanese Association of Medical Sciences
(JAMS).
Fumiki Hirahara, a doctor of obstetrics at Yokohama City
University who is well-versed in prenatal care, expressed concern over
BGI’s program, citing the lack of counseling.
“If testing becomes common among expectant mothers, and they
lack the mechanism to properly assess the accuracy of the results, it
could prove detrimental for them (and their babies),” he said.
Hirahara said Japanese medical personnel started doing
prenatal testing in April as part of clinical research, with an eye on
evaluating the benefits of genetic counseling.