School Backpacks and Kids' Backs: What Parents Should Know

A loaded school backpack should weigh no more than about 10 percent of your child's body weight, according to the American Chiropractic Association, with the American Academy of Pediatrics allowing a bit more room, up to about 10 to 15 percent. On an 80-pound child, that means roughly 8 to 12 pounds on their back. Many kids carry considerably more, and the extra load shows up as complaints about the back, shoulders and neck.

Why does it matter? A heavy pack carried the wrong way pulls the child forward and makes the spine work against gravity from an awkward position. Over a school year of daily carries, that repetitive load is a setup for strain, especially in growing bodies.

The fixes are mostly practical. Choose a lightweight pack with two wide, padded shoulder straps and use both of them; a one-shoulder sling is the fastest route to uneven loading. Tighten the straps so the pack sits snugly against the back rather than hanging low, and use the waist strap when the pack has one to take weight off the shoulders.

Packing matters as much as lifting. Put the heaviest items, like textbooks and laptops, closest to the child's back, use the compartments to stop things shifting around, and leave anything not needed that day at home or in the locker. The pack should be sized to the child: roughly from the shoulders to just below the waist, and no wider than the torso.

Watch for signs the load is too heavy: red marks or deep grooves on the shoulders, tingling or numbness in the arms or hands, a child who leans forward to carry the load, or regular complaints of back or neck pain. Any of those means it is time to lighten the pack and check the fit, not just wait for the school year to end.

Back pain in kids is not something to brush off, even when it seems minor. An evaluation can look at posture, movement and how the load is affecting the spine, and most children respond well to straightforward adjustments in habits. Dr. Gregory Martin has cared for local families since 1996 and welcomes parents with questions about their kids' backs. He sees patients at Gregory Martin Chiropractic at 283 Sparta Avenue in Sparta and at Speedwell Family Chiropractic at 520 Speedwell Avenue in Morris Plains. Call or text (973) 699-4100 to ask a question or book an appointment.