Multivitamin supplementation in older women
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Cognitive Function and Memory in Older Women with Multivitamin Supplementation
Research shows that multivitamin supplementation in older women may offer some cognitive benefits, particularly for working memory. A 16-week trial found that elderly women taking a combined multivitamin, mineral, and herbal supplement experienced improved speed of response in spatial working memory tasks, although no significant benefits were observed for other cognitive processes. The supplementation also led to increased levels of vitamins B6 and B12 and decreased homocysteine, a marker linked to cognitive decline, without any safety concerns for daily use in this population . However, another study in healthy older adults found that while multivitamin supplementation improved blood biomarkers related to cognition, such as B6 and B12, it did not result in measurable cognitive improvements over 16 weeks .
Mood, Stress, and Wellbeing: Effects of Multivitamins in Older Women
Several studies have explored the impact of multivitamin supplementation on mood and wellbeing in older women. A four-week trial found no significant benefits for current or recent mood when measured in a laboratory setting, but in-home assessments showed reduced stress and a trend toward less mental fatigue after multivitamin use . Another 12-week study reported that older women taking multivitamins experienced higher levels of friendliness, while older men reported reduced stress reactivity and emotional loneliness, suggesting potential benefits for social and emotional wellbeing Docherty2022Docherty2024. These findings indicate that multivitamin supplementation may subtly improve aspects of mood and social interaction, though effects may be more detectable in real-life settings than in controlled laboratory environments Macpherson2016Docherty2022Docherty2024.
Cardiovascular Health: Blood Pressure and Arterial Stiffness
The relationship between multivitamin use and cardiovascular health in older women appears limited. Large-scale studies found no association between multivitamin use and the risk of developing hypertension over more than a decade of follow-up . Similarly, a randomized controlled trial found no effect of four months of multivitamin supplementation on central blood pressure or related cardiovascular measures in healthy older women . However, one study did find that current multivitamin use was associated with lower pulse wave velocity, a marker of arterial stiffness, though no consistent associations were observed for other measures of arterial health .
B-Vitamin Status, Homocysteine, and Nutrient Absorption in Older Women
Multivitamin supplementation consistently improves B-vitamin status and lowers homocysteine levels in older adults, even among those already consuming a folate-fortified diet Macpherson2012Harris2015McKay2000. These changes are important because elevated homocysteine is a risk factor for cardiovascular and cerebrovascular disease. However, research also suggests that older adults may have altered absorption or metabolism of certain B-vitamins, such as vitamin B6, compared to younger adults, which could affect the functional benefits of supplementation and may indicate a need for higher intake in this age group .
Everyday Functioning and Quality of Life
Beyond cognition and mood, multivitamin supplementation may have positive effects on everyday functioning and social wellbeing in older adults. Studies have reported improvements in feelings of friendliness, reduced stress, and decreased emotional loneliness, particularly in older women, after 12 weeks of supplementation Docherty2022Docherty2024. These findings suggest that multivitamins could play a role in supporting overall quality of life in this population.
Conclusion
In summary, multivitamin supplementation in older women is generally safe and can improve blood levels of key nutrients and lower homocysteine. There is some evidence for benefits to working memory, mood, stress, and social wellbeing, though effects on broader cognitive function and cardiovascular health are limited or inconsistent. The impact on everyday functioning and quality of life may be meaningful, especially for those at risk of nutrient deficiencies or social isolation. Further research is needed to clarify the long-term benefits and optimal formulations for this population.
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