None of us is perfectly symmetric, but some musculoskeletal imbalances are so extreme that they can impact well-being and self-image. Scoliosis, a condition that leads to lateral curvature of the spine, affects 6 million people in the U.S., from infants to the elderly. The most common age of onset is 10-15 years, and 85 percent of cases are idiopathic, meaning that the cause is unknown. Medical treatments include braces and spinal surgery, but at least one doctor has found an even more effective remedy: yoga.