(CNN) - Facebook started as a social network for college kids, and it really took off from there. But it may have reached a saturation point among that group.
A new study shows teens are turning away from Facebook.
The social network might be more for grandpa these days.
Facebook, once being a hallmark site for teens and young users, seems to be falling out of favor with that age group.
The study from iStrategyLabs said that over the past three years the number of 13 to 17-year-olds on Facebook plunged 25 percent.
Also falling is the second-youngest age group 18 to 24.
Baby boomers are logging on in large numbers. The growth among the 55 and older group has exploded up 80 percent in the past three years.
This information is not a huge surprise.
Facebook's CFO said in October that it saw a decrease in teenage daily users during the quarter, and the stock plunged that day.
But not all experts are worried. One analyst said Facebook can recapture those young users.
The company is trying to do just that. It bought Instagram a few years ago, a site that's growing in popularity among teenagers.
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