VIDEO: MTV Shares First Look at Season 7 of TEEN MOM 2

Teen Mom 2

MTV's TEEN MOM 2 returns for a seventh season on March 21st at 10/9c. Check out the trailer for the new season below!

MTV's "Teen Mom" and "16 and Pregnant" have been widely credited for contributing to recent declines in teen birth rate in the United States, which fell 30 percent since the premiere of both shows in 2009. A 2014 study by researchers at the University of Maryland and Wellesley College found that the series ultimately led to a 5.7 percent reduction in teen births in the 18 months following its introduction - one-third of the overall decline in teen births in the United States in that period.

In a 2012 poll by the National Campaign to Prevent Teen and Unplanned Pregnancy, 77 percent of teens age 12-19 who have seen "16 and Pregnant" and "Teen Mom" say the shows "help teens better understand the challenges of pregnancy and parenting." According to the National Campaign, more than 600,000 teenage girls in the U.S. become pregnant every year and nearly one out of every ten children in the U.S. is born to a teenage mother. Nearly one in six teen moms has a second child during their teen years. The vast majority of teen pregnancies are unintended.

Video courtesy of MTV

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