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American Journal of Clinical Nutrition, Vol 54, 599-605, Copyright © 1991 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Caffeinated and decaffeinated coffee effects on plasma lipoprotein cholesterol, apolipoproteins, and lipase activity: a controlled, randomized trial

HR Superko, W Bortz Jr, PT Williams, JJ Albers and PD Wood
Stanford Center for Research in Disease Prevention, Stanford University School of Medicine, CA.

Coffee consumption has been associated with elevated plasma cholesterol. One hundred eighty-one men consumed a standard caffeinated coffee for 2 mo followed by randomization to continue caffeinated coffee (control), change to decaffeinated coffee or no coffee for 2 mo. Plasma low-density-lipoprotein (LDL) cholesterol and apolipoprotein B concentrations increased significantly (0.12 +/- 0.65 mmol/L, P less than 0.025; 0.06 +/- 0.12 g/L, P less than 0.0004, respectively) in the group that changed to decaffeinated coffee. In a subgroup (n = 51), post-heparin lipoprotein lipase decreased significantly more (-270 mmol free fatty acids.L-1.h-1, P less than 0.003) in the decaffeinated- coffee group. Resting heart rate and blood pressure did not change significantly. Change from caffeinated to decaffeinated coffee increased plasma LDL cholesterol and apolipoprotein B whereas discontinuation of caffeinated coffee revealed no change. This finding suggests that a coffee component other than caffeine is responsible for the LDL cholesterol, apolipoprotein B, and lipase activity changes reported in this investigation.


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