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The Tri-State area's number one source for News and Information. The Body From The Inside No Long Term Studies Available WCBS CBS HealthWatch, part of the CBS 2 Information Network. Dawn MacFarlane was hit by a car six years ago, which damaged a disc in her lower. She is among 80 percent of Americans who the American Medical Association says will experience low back pain at some point during their lifetimes. It affects you physically and mentally.