The study cited here involved volunteers between the ages of 61 and 87 years who were free of cognitive impairments when the study began. It was found that greater brain volume loss was associated with lower levels of vitamin B12. These individuals were not even vitamin B12 deficient according to the blood tests, but they had a lower level of vitamin B12 than the subjects with less brain volume loss.
If you want to prevent brain atrophy and likely cognitive impairment (memory loss) be sure to take not only vitamin B, but a high quality b-complex since all the b-vitamins are important for a variety of reasons.
- Vogiatzoglou A., et al. Vitamin B12 status and rate of birth volume loss in community-dwelling elderly. Neurology.2008 Sep 9;71(11):826-32