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Cholesterol-raising factor from boiled coffee does not pass a paper filter.

M van Dusseldorp1, M B Katan, T van Vliet

  • 1Department of Medicine, University of Nijmegen, The Netherlands.

Arteriosclerosis and Thrombosis : a Journal of Vascular Biology
|May 1, 1991
PubMed
Summary

Boiled coffee consumption significantly increases LDL cholesterol, but filtering it through paper removes this effect. Paper filters retain coffee lipids, preventing a rise in cholesterol levels.

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Area of Science:

  • Cardiovascular Health
  • Dietary Science
  • Lipid Metabolism

Background:

  • Previous research suggests boiled coffee elevates total and LDL cholesterol, unlike filtered coffee.
  • The specific mechanism and the role of coffee lipids in this effect require further investigation.

Purpose of the Study:

  • To evaluate the impact of boiled and filtered coffee on serum lipid profiles in healthy volunteers.
  • To determine if paper filtration removes the hypercholesterolemic factor present in boiled coffee.

Main Methods:

  • Sixty-four healthy volunteers consumed six cups daily of either boiled and filtered coffee, unfiltered boiled coffee, or no coffee for 17 and 79 days.
  • Serum lipid levels (total cholesterol, LDL, triglycerides, HDL), apolipoprotein B, campesterol, and lathosterol were measured.

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Main Results:

  • Boiled coffee consumption significantly increased total cholesterol, LDL cholesterol, and apolipoprotein B compared to boiled and filtered coffee.
  • No significant changes in serum lipids were observed in the boiled and filtered coffee group compared to the no-coffee group.
  • Cholesterol absorption markers remained constant, while cholesterol synthesis markers showed a slight increase in the boiled coffee group.

Conclusions:

  • Paper filters effectively remove the lipid components from boiled coffee responsible for elevating cholesterol levels.
  • Consuming boiled and filtered coffee does not adversely affect serum lipid profiles in healthy individuals.
  • Filtration is a key factor in mitigating the hypercholesterolemic effects of boiled coffee.