could you be insufficient in the b vitamins? micronutrient-depleted diets simply don't provide optimal amounts enriching processed foods with b vitamins doesn't do the trick metabolize those enriched grains us to supplement with a b-complex to ensure we get balanced and optimal amounts of all of these crucially important vitamins the benefits you can expect be smart and be focused optimal amounts of the b vitamins are critical for maintaining production of certain neurotransmitters as well as for the synthesis the dramatic consequences of a b deficiency is the interference of the natural breakdown and recycling of the amino acid researchers studying the brains of 732 elderly individuals with ad homocysteine-related atrophy in alzheimer's disease by possibly interventions using dietary folate supplementation." found that even those with slightly low levels of vitamin b₁2 and folate had twice the risk of cognitive and memory concerns as those folate concentration in the elderly may be relevant for prevention of ad." b₁2 levels were less likely to experience brain shrinkage than those further investigated as a modifiable cause of brain atrophy and of likely subsequent cognitive impairment in the elderly."