One study suggests that low blood levels of vitamin D may increase risk for cognitive decline, while another study shows that consuming a diet rich in the antioxidant powerhouse vitamin E may help reduce the risk for dementia, including Alzheimer's disease.
Deoxyribose is a pentose sugar important in the formation of DNA, or deoxyribonucleic acid. Deoxyribose is a key building block of DNA. Its chemical structure allows for the replication of cells in DNA's double helix configuration. Deoxyribose contains 5 carbon atoms that are arranged to form the sugar's pentagonal shape.
The sugar that is part of a nucleotide is a 5-carbon atom sugar in its ring form. It will either be ribose in RNA or deoxyribose in DNA. The deoxy simply means that the ribose molecule has lost an oxygen. That missing oxygen happens to be from the second carbon, so the more correct name for deoxyribose is 2-deoxyribose.