That's not good, because a lack of proper support can lead to poor posture, neck and back pain, and even nerve problems in your arms and shoulders. (webmd.com)
This supplement is used by breast cancer patients to help with fatigue or with nerve problems associated with chemotherapy, according to the study. (health.com)
But the investigators found the supplement was ineffective for fighting fatigue, and could worsen nerve problems. (health.com)