Increased incidence of asthma in the U.S., smoking is a trigger

The number of asthmatics in the United States has increased. One out of every 12 people has asthma. The authorities have tightened control over the triggers of asthma (such as indoor smoking), but it has no effect.

According to Reuters, statistics from the Federal Center for Disease Control and Prevention show that from 2001 to 2009, the number of asthma patients in the United States increased by 4.3 million. Asthma can cause asthma, chest tightness, coughing and shortness of breath.

According to Paul Garbe, director of the Air Pollution and Respiratory Health Department at the Center for Disease Control and Prevention, although the outdoor air has improved, the other two main causes of asthma - smoking and secondhand smoke - have also been controlled. The incidence of asthma is rise. We do not know the reason for this increase. The first task is to help people to better control their condition.

The increase in the incidence of pediatric patients was particularly significant, with asthma in 9.5% of children and 7.7% in adults. The incidence of black children has increased by nearly 50%. In 2009, 17% of black children had asthma.

Thomas Frieden, head of the CDC, said in a statement: "Asthma is a serious lifelong disease. Every year, thousands of people die of asthma. The medical expenses for asthma treatment are billions of dollars every year." We need to help people understand how to control the condition and how to use the medicine correctly.

The survey found that 2 out of 5 people without medical insurance had asthma, and 1 out of 9 medical insurance people could not afford asthma medicine.