percent in public places，and almost 6 percent on public transportation，shows a research released by the Shanghai Children's Medical Center on Tuesday.

　　“Not only adults but also children and newborn babies are at risk for the adverse effects of passive smoking, ”said Tang Jingyan, a doctor at the Shanghai Children's Medical Center.“Actually, those young children whose bodies are still growing and developing are more sensitive to the effects of secondhand smoke.”

　　Research has shown that children who are exposed to secondhand smoke will suffer from more colds, coughs and sore throats，and they are more likely to suffer from bronchitis, pneumonia and will have a higher risk of developing cancer.Doctors even suggested that children suffering passive smoking are more likely to have behavioral problems and may not developmentally as quickly as their peers.Other research by the Shanghai Children's Medical Center has found that more than 80 percent of child patients in the center live in a smoke filled household, where one or both parents smoke.

　　“Though doctors have stressed the harm of passive smoking over and over, it is still hard to reach a totally smoke free home, ”said a pediatrician named Zhang Yiwen, noting that parents are often tempted to smoke even though they have learned the harmful effects of secondhand smoke.

　　China has 540 million people suffering from passive smoke，180 million of them younger than 15.The age of smokers is also getting lower, earlier reports said.

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