Newswise — Backpacks bursting with books and school supplies could lead to more than just good grades. Carrying overloaded backpacks could lead to Rucksack Paralysis - nerve damage caused by strain on the shoulders and arms - says Dr. Jay Cook, professor of neurology in the division of pediatric neurology at UT Southwestern Medical Center at Dallas.

"It is far more common than is reported," Dr. Cook says. "Children generally do not complain that much and parents will ascribe any symptoms to other things."

Symptoms include pain and tingling in the hands and arms. The problem could become permanent if kids continue to sport packs that are too heavy. Dr. Cook suggests that parents should make sure the bag isn't heavier than the child can carry. If the child is straining or slouching, the pack's too heavy.

To distribute the load, choose backpacks with a waistband or use a rolling cart. Never carry the pack on just one shoulder.

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