Vitamin B12 Levels May Be Key to Slowing cognitive decline, New Research Suggests
BOSTON – Emerging research indicates that maintaining adequate vitamin B12 levels could play a notable role in preventing cognitive decline and potentially mitigating the effects of Alzheimer’s disease. A 2015 study published in Alzheimers & Dementia,conducted by scientists at Boston University Medical Center,found that nearly 2,000 participants with an average age of 60 who had higher vitamin B12 levels experienced slower rates of cognitive decline,specifically in language skills,compared to those with lower levels. Researchers concluded that increased vitamin B12 could help ”mitigate cognitive decline in later life.”
Though, a more recent study challenges current recommended daily allowances of the vitamin. Researchers found evidence of brain damage in participants even when consuming vitamin B12 at levels considered generally sufficient.Dr. Ari J. Green, lead author of the study, explained that previously defined “healthy” levels of B12 may not detect subtle functional issues affecting individuals without obvious symptoms. He also noted that a severe B12 deficiency is often linked to anemia and potential long-term brain damage due to iron deficiency.
The German Society for Nutrition (DGE) currently recommends a daily intake of at least 4.0 micrograms of vitamin B12. Because vitamin B12 is primarily found in animal products, vegans and vegetarians are advised to be notably vigilant about their intake, potentially exploring sources like sauerkraut, seaweed (nori), and shiitake mushrooms, or consulting a doctor about supplementation.
for those who consume animal products, the following amounts of vitamin B12 are typically found in:
* 1 egg: approximately 1 microgram
* 1 glass of milk (200 ml): approx. 0.9 micrograms
* 1 slice of Gouda (30 g): approximately 0.8 micrograms
* 1 portion of salmon on bread (50 g): 2 to 3 micrograms
