Legalizing same-sex marriage in the U.S. may have literally saved American lives.

In a new study published in JAMA Pediatrics, researchers at Harvard and John Hopkins universities examined the rate of youth suicide attempts in states before and after same-sex marriage laws. They found legalizing same-sex marriage was associated with a marked decrease in youth suicide attempts.

Before same-sex marriage was legalized, 8.6% of high school students in the study reported a suicide attempt. After, the overall rate dropped by 0.6 percentage point — a 7% decrease. The effect was even higher in lesbian, gay, bisexual, and questioning youth, who saw a 14% decrease.

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