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Should adolescence last until age 24? A group of scientists think so 

Adolescence is thought to end at about age 18, but a group of scientists wants to extend it to 24, according to a new report. 

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Researchers from hospitals and research institutions Australia recently conducted an experiment, published in The Lancet Child & Adolescent Health, to determine the span of years that should define adolescence.

Traditionally, it is the period between childhood and adulthood, or generally from age 10 to 18. However, the researchers believe the biological and societal shifts over the last several decades indicate the need for an extension of adolescence. 

“Adolescence is the phase of life stretching between childhood and adulthood, and its definition has long posed a conundrum. Adolescence encompasses elements of biological growth and major social role transitions, both of which have changed in the past century,” they said.

Young girls and boys develop earlier than previous generations, they noted. For example, many preteens begin menstruating at 10, while their parents and grandparents started at 14. 

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They also pointed out that the adolescent brain does not stop developing until a person is in their 20s and that wisdom teeth now generally grow in at 25. 

Furthermore, young adults are getting married later in life. It’s more common for youth to settle down in their 30s as opposed to their 20s. And they’re leaving the nest later, too, which is expected by parents and society, they said. Analysts used the United States as an example, because insurance companies are now allowing adults to keep their kids on policies longer. 

“Rather than age 10–19 years, a definition of 10–24 years corresponds more closely to adolescent growth and popular understandings of this life phase and would facilitate extended investments across a broader range of settings,” the authors wrote. 

Researchers believe the extension will encourage governments to better frame laws meant to protect youth and help young people on their journey through adulthood.

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