Vitamin B12 May Lower Alzheimer’s Risk

Vitamin B12 may help to protect people against Alzheimer’s disease, a small study suggests. But other studies in this area have had mixed results. Some have found a link between B12 and Alzheimer’s risk. Others have not. The new study included 271 Finns. They were 65 to 79 years old at the start of the study. At that time, they did not have Alzheimer’s or other dementia. Researchers gave people blood tests. They measured levels of homocysteine, one of the building blocks of proteins. People with high homocysteine levels have a greater risk of stroke. They also measured the active form of B12, which lowers homocysteine levels. During the next 7 years, 17 people developed Alzheimer’s disease. People with higher levels of homocysteine also were more likely to develop Alzheimer’s.

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Osteoporosis Drug May Rebuild Jawbone

An osteoporosis drug also may help to rebuild lost bone in the jaw, two new studies have found. One study describes a woman who had taken the osteoporosis drug alendronate (Fosamax) for 10 years. She developed a rare side effect called osteonecrosis in her jaw. This condition kills bone cells. Doctors tried treating her jaw with a different osteoporosis drug. This drug was teriparatide (Forteo). It is a form of parathyroid hormone made in a laboratory. This drug stimulates the body to rebuild lost bone. After 8 weeks of teriparatide injections, the woman’s jaw healed. Another study involved 40 people. They had bone loss in the jaw caused by periodontal (gum) disease. They all had jaw surgery. Then they were randomly assigned to receive either teriparatide or fake (placebo) injections. They were treated for 6 weeks. People who got the teriparatide healed better.

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