According to researchers, “vitamin B12 and related metabolites may have a role in Alzheimer’s disease”—an important finding since a vitamin B12 deficiency is a “common condition” in the elderly.
Investigating homocysteine levels (if elevated, associated with strokes) and levels of an active protein in B12 (holotranscobalamin) that can reduce homocysteine blood level. Their seven-year follow-up revealed that with every small increase of homocysteine, the risk for Alzheimer’s shot up 16%.
More study is needed, yet a case is being made for a diet rich in vitamin B12 to ward off neurodegenerative disease.
Top Food Sources of Vitamin B-12, Per 100g Serving:
• fish (mackerel, herring, salmon, tuna, cod,sardines, trout, bluefish) - 317% RDA (mackerel)
• beef - 103% RDA (lean, fat-trimmed chuck)
• lamb - 62% RDA (shoulder cut)
• cheese - 56% RDA (swiss cheese), 40% RDA (gjetost), 39% RDA (mozzarella), 38% RDA (parmesan), 35% RDA (tilsit)
• eggs - 33% (chicken, raw yellow), 122% RDA (goose egg), 63% (duck egg)