A new study on teen inhalant abuse suggests a need for more prevention and treatment efforts.

The study conducted by the Office of National Drug Control Policy shows that fewer teens are sniffing things like glue, lighter fluid, shoe polish and other easy-to-find substances. But it find the number of teens who actually abuse inhalants, as opposed to just trying them, has remained stable over a five-year period.

A government official says "most parents don't realize how dangerous inhalants can be." He said they're among the most popular and deadly substances that kids abuse.

The study found that nearly 1 million American youths aged 12 to 17 used some kind of inhalant in 2007. That's about 3.9 percent of adolescents compared with 4.4 percent the previous year. The study also found that the rate of "initiation" or teens trying inhalants for the first time was also slightly lower in 2007.