Journal
NUTRIENTS
Volume 8, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/nu8110748
Keywords
homocysteine; hyperhomocysteinemia; depressive symptoms; quality of life; vitamin B-12; folic acid; older adults; randomized controlled trial
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Funding
- Netherlands Organization for Health Research and Development (ZonMw, Grant), the Hague [6130.0031]
- Dutch Dairy Association (NZO), Zoetermeer
- MCO Health, Almere
- Netherlands Consortium Healthy Ageing (NCHA), Leiden/Rotterdam
- Ministry of Economic Affairs, Agriculture and Innovation, the Hague [KB-15-004-003]
- Wageningen University, Wageningen
- VU University Medical Center, Amsterdam
- Erasmus Medical Center, Rotterdam
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Lowering elevated plasma homocysteine (Hcy) concentrations by supplementing vitamin B12 and folic acid may reduce depressive symptoms and improve health-related quality of life (HR-QoL) in older adults. This study aimed to test this hypothesis in a randomized controlled trial. Participants (N = 2919, >= 65 years, Hcy concentrations >= 12 mu mol/L) received either 500 mu g vitamin B12 and 400 mu g folic acid daily or placebo for two years. Both tablets contained 15 mu g vitamin D-3. Depressive symptoms were measured with the Geriatric Depression Scale-15 (GDS-15). HR-QoL was assessed with the SF-12 Mental and Physical component summary scores and the EQ-5D Index score and Visual Analogue Scale. Differences in two-year change scores were analyzed with Analysis of Covariance (ANCOVA). Hcy concentrations decreased more in the intervention group, but two-year change scores of the GDS-15 and three of four HR-QoL measures did not differ between groups. The EQ-5D Index score declined less in the intervention group than in the placebo group (mean change 0.00 vs. -0.02, p = 0.004). In conclusion, two-year supplementation with vitamin B-12 and folic acid in older adults with hyperhomocysteinemia showed that lowering Hcy concentrations does not reduce depressive symptoms, but it may have a small positive effect on HR-QoL.
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