Can a backpack cause lower back pain?
By putting a heavy weight on your shoulders in the wrong way, the weight's force can pull you backward. So people who carry heavy backpacks sometimes lean forward. Because of the heavy weight and this unnatural position, they can develop shoulder, neck, and back pain.
Are backpacks better for your back?
While backpacks are generally better, they too can cause problems. Carrying too heavy of a load can force your spine to bend backward, causing you to pull forward to maintain balance. This action can make your spine compress unnaturally, which can create hip and back pain and a hunched posture.