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To the Editor:—
The study of Bernstein et al, "Prevalence of Osteoporosis in High- and Low-Fluoride Areas in North Dakota" (198:499, 1966) is peculiar in the finding of osteoporosis and spine fractures in 50% of elderly men in both highand low-fluoride areas, as well as in 40% of elderly women in low-fluoride areas. Vincent and Urist (Clin Orthop19:245, 1961) found severe osteoporosis and spine fractures in 26% of institutionalized women, average age 85 years, and in 12% of institutionalized men whose average age was 66 years. Gershon-Cohen et al (JAMA153:625, 1953) found fractures of the spine in 20% of the men and 29% of the women in a group of institutionalized individuals whose ages ranged from 63 to 95 years.In both of these studies the authors radiographed the thoracic as well as the lumbar spine, thereby increasing the chances of finding fractures. These findings
Saville PD. Osteoporosis And Fluorides. JAMA. 1967;199(1):47. doi:10.1001/jama.1967.03120010091032