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Scientists have their estimation of when adolescence ends and adulthood . Adolescence is that difficult time when children into adults. It was traditionally to with our teenage years. However, scientists from the University of Melbourne have this. They say it can at the age of 10 and continue to the age of 24. Puberty used to around the age of 14, but because of improved health and nutrition, puberty can now start at the age of 10, especially in the developed world. Likewise, the upper age for when adolescence ends has been . This is because we stay in education longer, and responsibilities like marriage, parenthood and getting a job.

The scientists their study in the "Lancet Child and Adolescent Health" journal. They say society to change laws to into account the findings of the research. Professor Susan Sawyer said: "Although many adult legal privileges at age 18, the adoption of adult roles and responsibilities generally later." The researchers say youth support services could extended to the age of 25. However, this could problematic in many countries around the globe. There a big difference in the legal age at which nations adulthood. Children legally adults at the age of 15 in Indonesia, Myanmar and Yemen. In Singapore, Zambia and Honduras, the age is 21.

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