Note that some links will break as pages are moved, websites are abandoned, etc.
If this happens, please try searching for the page in the Wayback Machine at www.archive.org.
"Some chiropractors think that spinal manipulation can relieve not just back pain, but everything from asthma to premenstrual syndrome. But the National Institutes of Health and other authorities have been skeptical of the effectiveness of chiropractic. And research shows that mainstream treatments for lower back pain are equally effective. Many chiropractors also devote considerable time to marketing—in part to pay back the cost of chiropractic school, usually over $100,000." US News