Dietary protein and phosphorus do not affect calcium absorption

R. P. Heaney

Research output: Contribution to journalArticle

64 Scopus citations

Abstract

Background: Variation in absorption efficiency explains more of the variability in calcium balance than does actual calcium intake. Several investigators have suggested that the relatively high phosphorus and protein intakes of the diets of industrialized nations reduce calcium absorption and thereby aggravate the problem of calcium deficiency. Objective: My objective was to test whether variation in phosphorus and protein intakes is associated with variation in calcium absorption. Design: One hundred ninety-one Roman Catholic nuns aged 48.7 ± 7.0 y were studied ≃3 times each over a >20-y period with a full metabolic balance regimen; controlled, chemically analyzed diets; and double-tracer measurement of calcium absorption. Results: Although the expected associations with absorption were found for age, calcium intake, and estrogen status, no association was observed for intakes of either phosphorus or protein. Conclusion: Phosphorus and protein intakes do not contribute to the wide variability in calcium absorption efficiency.

Original languageEnglish (US)
Pages (from-to)758-761
Number of pages4
JournalAmerican Journal of Clinical Nutrition
Volume72
Issue number3
StatePublished - Sep 13 2000

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

Fingerprint Dive into the research topics of 'Dietary protein and phosphorus do not affect calcium absorption'. Together they form a unique fingerprint.

  • Cite this