http://www.neurology.org/content/71/11/826.abstract?maxtoshow=&HITS=10&am...
ъ: Conclusion: Low vitamin B12 status should be further investigated as a modifiable cause of brain atrophy and of likely subsequent cognitive impairment in the elderly.
ъ2:Results: The decrease in brain volume was greater among those with lower vitamin B12
Ъ: недостаток B12 увеличивает риски уменьшения мозга на старости лет.