A study released last week by the Centers for Disease Control and Prevention in Atlanta finds asthma affects one in six U.S. high school students, with one-third of those having an attack in the previous year.

More than 13,000 students in 2003 were involved in the survey

Yum Brands Inc., parent company of KFC and Pizza Hut, says Thursday it has decided to ban smoking at all nationwide restaurants.

The Louisville-based company says it will erect "No Smoking" signs starting next week at the 1,200 KFC and 1,675 Pizza Hut locations across the country that are company-owned

One out of every six U.S. high school students suffers from asthma and more than one-third of those report having an attack in the previous year, according to a federal study released on Thursday, that suggests schools do more to manage the potentially fatal lung disease.

In 2003, an estimated 16.1 percent of those enrolled in grades 9 through 12 said they were suffering from the disease, according to a survey of more than 13,000 students by the Centers for Disease Control and Prevention

One out of every six U.S. high school students suffers from asthma and more than one-third of those report having an attack in the previous year, according to a federal study released on Thursday, that suggests schools do more to manage the potentially fatal lung disease.

In 2003, an estimated 16.1 percent of those enrolled in grades 9 through 12 said they were suffering from the disease, according to a survey of more than 13,000 students by the Centers for Disease Control and Prevention

Researchers say an analysis of over 400 blockbuster movies shows villains smoke more often than heroes, and the poor puff up more often than the rich.

Dr. Karan Omidvari, of St. Michael's Medical Center in Newark, New Jersey, and her colleagues studied leading characters in box office hits made after 1990, including "Armageddon," "There's Something About Mary," and "Jerry Maguire