Japan study warns children’s screen time may increase prolonged sitting

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  A Japanese health ministry research team warned that long periods using smartphones and other devices can contribute to children sitting too much.

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  The team said prolonged sitting can affect children's physical fitness and mental health, including contributing to low mood.

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  It advised parents and children to agree on rules, such as limiting screen time to within two hours a day.

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  The team recommended that children stand or move during breaks at school or cram school and do suitable activities, such as reading aloud, while standing.

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  It said regular breaks from sitting can help both children and adults, and suggested options including stretching and height-adjustable desks.

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  The report also linked prolonged sitting among older people to dementia and declining physical function.

Who

A Japanese health ministry research team, with advice for children, parents and adults

What

A study warned that prolonged screen use can contribute to excessive sitting and offered ways to reduce sedentary time.

When

Published October 10, 2026; the Kyodo item was dated October 10, 2026.

Where

Japan

Why

Prolonged sitting can affect children's physical fitness and mental health; among older people, it is linked to dementia and declining physical function.

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