Journal of the American College of Nutrition, Vol 10, Issue 2 107-113, Copyright © 1991 by American College of Nutrition

JOURNAL ARTICLE

Impact of menstrual periodicity on serum lipid levels and estimates of dietary intakes

C. Tangney, C. Brownie and S. M. Wu
Department of Foods and Nutrition, University of North Carolina, Greensboro.

Nine eumenorrheic women were studied at five separate times each month for a minimum of 2 months. Fasting bloods and 1-day food records were obtained from all women at these times to describe the pattern and magnitude of within-person variation in selected nutrient and lipid indicators attributable to menstrual cyclicity. Serum cholesterol, beta-carotene, 17 beta-estradiol (E2), and dietary selenium intakes exhibited significant periodic regressions against time. For the group as a whole, however, only serum cholesterol and E2 measures exhibited significantly strong consistent periodicities. Future studies with a larger sample of women are warranted to confirm these findings. Unless strict blood sampling protocols are followed, variation attributable to menstrual cyclicity may mitigate the reliability of the serum cholesterol screenings advocated in the past few years.

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