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Caffeine consumption and serum cholesterol levels.

M J Shirlow, C D Mathers

    International Journal of Epidemiology
    |December 1, 1984
    PubMed
    Summary

    Caffeine intake is linked to higher serum cholesterol in women, but not men. High caffeine consumption in women showed a greater risk of elevated cholesterol, especially when combined with smoking.

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    Area of Science:

    • Nutrition Science
    • Cardiovascular Health
    • Epidemiology

    Background:

    • Serum cholesterol levels are a key indicator of cardiovascular health.
    • Caffeine is a widely consumed psychoactive substance with potential metabolic effects.
    • Understanding caffeine's impact on cholesterol is important for public health.

    Purpose of the Study:

    • To investigate the association between caffeine consumption and serum cholesterol levels.
    • To examine potential sex differences in this association.
    • To explore interactions with other lifestyle factors like smoking.

    Main Methods:

    • Cross-sectional study of 4757 Australian adults.
    • Data collected on caffeine intake, serum cholesterol, smoking, age, adiposity, and occupation.
    • Statistical analyses performed to assess associations and interactions, controlling for confounders.

    Main Results:

    • Caffeine consumption was significantly associated with higher serum cholesterol in women, but not men.
    • Women consuming ≥200 mg/day had 11 mg/dl higher mean cholesterol and >2 times the risk of high cholesterol.
    • A significant positive interaction between smoking and caffeine was observed for females.

    Conclusions:

    • Caffeine intake, particularly in higher amounts, is associated with elevated serum cholesterol in women.
    • The association differs between sexes, with men showing no link to total caffeine intake.
    • Smoking may potentiate the effect of caffeine on cholesterol levels in women.

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