Because of the seriousness of osteoporosis, researchers are eager to discover new treatment options. However, one treatment, the use of sodium fluoride, may offer Eilse hope. Researchers had found that sodium fluoride combined with calcium citrate partially restored bone loss in the spine and appeared to inhibit further spinal fractures. Other researchers are skeptical and have raised serious questions about the process. Sodium fluoride, when it reacts with gastric acid, may cause corrosion of the stomach lining and bleeding. In addition, the bone regenerated by the treatment is not as strong as normal bone growth and may not effectively prevent fractures. Sodium fluoride has also been known to cause joint pain, swelling, and stress fractures in up to 40% of patients I The Alliance Reports 1989; Winter:3].