Backpacks that are too heavy can cause chronic back pain if regularly carried for long stretches of time.
How backpacks contribute to back pain and what you can do to prevent it - ABC News
South Coast Fever - Heavy backpacks should be a concern IF your child complains about a school bag being too heavy, don't ignore it as it could cause severe damage to their
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Are heavy schoolbags really damaging children's backs? – The Irish Times
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