There was a bevy of good news in the new National Youth Risk Behavior Survey, released by the Centers for Disease Control and Prevention, but every silver lining seems to have a cloud.

The survey, in which more than 13,000 American high school students participated, found that teen smoking is at its lowest since the CDC started conducting its biannual survey in 1991. Just 15.7 percent of students say they smoked in 2013—a two percentage-point drop from 2011 and more than 20 points lower than the all-time high of 36.4 percent hit in 1997. However, the CDC cautions that other surveys have shown that e-cigarette use is on the rise.

Teens don’t watch television nearly as much as they once did either. Only about a third said they watched more than three hours of TV a day, but they’re using other screen devices a lot more. More than 41 percent admit to using some sort of electronic device for more than three hours a day for something other than studying, and doctors long have warned that too much screen time is bad for a child’s health.

Teens are having less sex overall: Less than half of teens (47 percent) said they were sexually active, compared to the 54 percent of teens in 1991 who admitted to having sex, but doctors lament that sexually active teens use condoms less frequently.

Also troubling: More than two out of every five teens—41 percent—admitted to texting and driving at least once in the past month. (CDC, Washington Post)

Paul Asay has written for The Washington Post, Christianity Today, Beliefnet.com and The (Colorado Springs) Gazette. He writes about culture for PluggedIn and wrote the Batman book God on the Streets of Gotham (Tyndale). He recently collaborated with Jim Daly, president of Focus on the Family, on his book The Good Dad. He lives in Colorado Springs with wife, Wendy, and his two children. Follow him on Twitter.