Homocysteine, B vitamin status, and cognitive function in the elderly

Susan J Duthie, Lawrence J Whalley, Andrew R Collins, Steve Leaper, Kerstin Berger, Ian J Deary

    Research output: Contribution to journalArticle

    212 Citations (Scopus)

    Abstract

    Background: Old age is associated with reduced cognitive performance. Nutritional factors may contribute to this association,

    Objective: We tested associations between cognitive performance and plasma vitamin B-12, folate, and homocysteine concentrations in the elderly.

    Design: We studied survivors of the Scottish Mental Surveys of 1932 (Aberdeen 1921 Birth Cohort, or ABC21) and 1947 (Aberdeen 1936 Birth Cohort, or ABC36), which surveyed childhood intelligence quotient. We measured folate, vitamin B-12, and homocysteine concentrations in fasting blood samples and cognitive performance by the Mini Mental State Examination (MMSE), National Adult Reading Test (NART), Raven's Progressive Matrices (RPM), Auditory Verbal Learning Test (AVLT), digit symbol (DS) subtest, and block design (BD) subtest.

    Results: Homocysteine was higher in the ABC21 than in the ABC36 (P < 0.0001). There were positive correlations between folate and vitamin B-12 and negative correlations between homocysteine and both folate and vitamin B-12. MMSE, RPM, AVLT, DS. and BD scores were higher in the ABC36. In the ABC21, folate, vitamin B-12, and MMSE score were positively correlated and homocysteine was negatively correlated with RPM, DS, and BD scores. Folic acid was positively correlated with AVLT and DS scores. In the ABC36, folate was positively correlated with BD score-After adjustment for childhood intelligence quotient, partial correlations were strengthened between vitamin B-12 and NART score and between homocysteine and RPM score but weakened between red blood cell folate and DS score.

    Conclusions: B vitamins and homocysteine are associated with cognitive variation in old age. In the ABC21 but not the ABC36, homocysteine accounted for approximate to7-8% of the variance in cognitive performance. This may prove relevant to the design of neuroprotective studies in late life.

    Original languageEnglish
    Pages (from-to)908-913
    Number of pages6
    JournalThe American Journal of Clinical Nutrition
    Volume75
    Issue number5
    Publication statusPublished - 2002

    Keywords

    • Aged
    • Aging
    • Cognition
    • Cohort Studies
    • Female
    • Folic Acid
    • Homocysteine
    • Humans
    • Intelligence
    • Male
    • Psychological Tests
    • Vitamin B 12
    • Folate
    • Vitamin B-12
    • Elderly
    • Community-based survey
    • Scottish Mental Survey
    • Mental ability
    • Plasma homocysteine
    • Folate
    • Age
    • Performance
    • Depression
    • Childhood disease
    • Health

    Cite this

    Duthie, S. J., Whalley, L. J., Collins, A. R., Leaper, S., Berger, K., & Deary, I. J. (2002). Homocysteine, B vitamin status, and cognitive function in the elderly. The American Journal of Clinical Nutrition, 75(5), 908-913.

    Homocysteine, B vitamin status, and cognitive function in the elderly. / Duthie, Susan J; Whalley, Lawrence J; Collins, Andrew R; Leaper, Steve; Berger, Kerstin; Deary, Ian J.

    In: The American Journal of Clinical Nutrition, Vol. 75, No. 5, 2002, p. 908-913.

    Research output: Contribution to journalArticle

    Duthie, SJ, Whalley, LJ, Collins, AR, Leaper, S, Berger, K & Deary, IJ 2002, 'Homocysteine, B vitamin status, and cognitive function in the elderly', The American Journal of Clinical Nutrition, vol. 75, no. 5, pp. 908-913.
    Duthie SJ, Whalley LJ, Collins AR, Leaper S, Berger K, Deary IJ. Homocysteine, B vitamin status, and cognitive function in the elderly. The American Journal of Clinical Nutrition. 2002;75(5):908-913.
    Duthie, Susan J ; Whalley, Lawrence J ; Collins, Andrew R ; Leaper, Steve ; Berger, Kerstin ; Deary, Ian J. / Homocysteine, B vitamin status, and cognitive function in the elderly. In: The American Journal of Clinical Nutrition. 2002 ; Vol. 75, No. 5. pp. 908-913.
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    abstract = "Background: Old age is associated with reduced cognitive performance. Nutritional factors may contribute to this association,Objective: We tested associations between cognitive performance and plasma vitamin B-12, folate, and homocysteine concentrations in the elderly.Design: We studied survivors of the Scottish Mental Surveys of 1932 (Aberdeen 1921 Birth Cohort, or ABC21) and 1947 (Aberdeen 1936 Birth Cohort, or ABC36), which surveyed childhood intelligence quotient. We measured folate, vitamin B-12, and homocysteine concentrations in fasting blood samples and cognitive performance by the Mini Mental State Examination (MMSE), National Adult Reading Test (NART), Raven's Progressive Matrices (RPM), Auditory Verbal Learning Test (AVLT), digit symbol (DS) subtest, and block design (BD) subtest.Results: Homocysteine was higher in the ABC21 than in the ABC36 (P < 0.0001). There were positive correlations between folate and vitamin B-12 and negative correlations between homocysteine and both folate and vitamin B-12. MMSE, RPM, AVLT, DS. and BD scores were higher in the ABC36. In the ABC21, folate, vitamin B-12, and MMSE score were positively correlated and homocysteine was negatively correlated with RPM, DS, and BD scores. Folic acid was positively correlated with AVLT and DS scores. In the ABC36, folate was positively correlated with BD score-After adjustment for childhood intelligence quotient, partial correlations were strengthened between vitamin B-12 and NART score and between homocysteine and RPM score but weakened between red blood cell folate and DS score.Conclusions: B vitamins and homocysteine are associated with cognitive variation in old age. In the ABC21 but not the ABC36, homocysteine accounted for approximate to7-8{\%} of the variance in cognitive performance. This may prove relevant to the design of neuroprotective studies in late life.",
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    TY - JOUR

    T1 - Homocysteine, B vitamin status, and cognitive function in the elderly

    AU - Duthie, Susan J

    AU - Whalley, Lawrence J

    AU - Collins, Andrew R

    AU - Leaper, Steve

    AU - Berger, Kerstin

    AU - Deary, Ian J

    PY - 2002

    Y1 - 2002

    N2 - Background: Old age is associated with reduced cognitive performance. Nutritional factors may contribute to this association,Objective: We tested associations between cognitive performance and plasma vitamin B-12, folate, and homocysteine concentrations in the elderly.Design: We studied survivors of the Scottish Mental Surveys of 1932 (Aberdeen 1921 Birth Cohort, or ABC21) and 1947 (Aberdeen 1936 Birth Cohort, or ABC36), which surveyed childhood intelligence quotient. We measured folate, vitamin B-12, and homocysteine concentrations in fasting blood samples and cognitive performance by the Mini Mental State Examination (MMSE), National Adult Reading Test (NART), Raven's Progressive Matrices (RPM), Auditory Verbal Learning Test (AVLT), digit symbol (DS) subtest, and block design (BD) subtest.Results: Homocysteine was higher in the ABC21 than in the ABC36 (P < 0.0001). There were positive correlations between folate and vitamin B-12 and negative correlations between homocysteine and both folate and vitamin B-12. MMSE, RPM, AVLT, DS. and BD scores were higher in the ABC36. In the ABC21, folate, vitamin B-12, and MMSE score were positively correlated and homocysteine was negatively correlated with RPM, DS, and BD scores. Folic acid was positively correlated with AVLT and DS scores. In the ABC36, folate was positively correlated with BD score-After adjustment for childhood intelligence quotient, partial correlations were strengthened between vitamin B-12 and NART score and between homocysteine and RPM score but weakened between red blood cell folate and DS score.Conclusions: B vitamins and homocysteine are associated with cognitive variation in old age. In the ABC21 but not the ABC36, homocysteine accounted for approximate to7-8% of the variance in cognitive performance. This may prove relevant to the design of neuroprotective studies in late life.

    AB - Background: Old age is associated with reduced cognitive performance. Nutritional factors may contribute to this association,Objective: We tested associations between cognitive performance and plasma vitamin B-12, folate, and homocysteine concentrations in the elderly.Design: We studied survivors of the Scottish Mental Surveys of 1932 (Aberdeen 1921 Birth Cohort, or ABC21) and 1947 (Aberdeen 1936 Birth Cohort, or ABC36), which surveyed childhood intelligence quotient. We measured folate, vitamin B-12, and homocysteine concentrations in fasting blood samples and cognitive performance by the Mini Mental State Examination (MMSE), National Adult Reading Test (NART), Raven's Progressive Matrices (RPM), Auditory Verbal Learning Test (AVLT), digit symbol (DS) subtest, and block design (BD) subtest.Results: Homocysteine was higher in the ABC21 than in the ABC36 (P < 0.0001). There were positive correlations between folate and vitamin B-12 and negative correlations between homocysteine and both folate and vitamin B-12. MMSE, RPM, AVLT, DS. and BD scores were higher in the ABC36. In the ABC21, folate, vitamin B-12, and MMSE score were positively correlated and homocysteine was negatively correlated with RPM, DS, and BD scores. Folic acid was positively correlated with AVLT and DS scores. In the ABC36, folate was positively correlated with BD score-After adjustment for childhood intelligence quotient, partial correlations were strengthened between vitamin B-12 and NART score and between homocysteine and RPM score but weakened between red blood cell folate and DS score.Conclusions: B vitamins and homocysteine are associated with cognitive variation in old age. In the ABC21 but not the ABC36, homocysteine accounted for approximate to7-8% of the variance in cognitive performance. This may prove relevant to the design of neuroprotective studies in late life.

    KW - Aged

    KW - Aging

    KW - Cognition

    KW - Cohort Studies

    KW - Female

    KW - Folic Acid

    KW - Homocysteine

    KW - Humans

    KW - Intelligence

    KW - Male

    KW - Psychological Tests

    KW - Vitamin B 12

    KW - Folate

    KW - Vitamin B-12

    KW - Elderly

    KW - Community-based survey

    KW - Scottish Mental Survey

    KW - Mental ability

    KW - Plasma homocysteine

    KW - Folate

    KW - Age

    KW - Performance

    KW - Depression

    KW - Childhood disease

    KW - Health

    M3 - Article

    C2 - 11976166

    VL - 75

    SP - 908

    EP - 913

    JO - The American Journal of Clinical Nutrition

    JF - The American Journal of Clinical Nutrition

    SN - 0002-9165

    IS - 5

    ER -