Does a high dietary intake of calcium adversely affect iron status in humans?

Bo Lönnerdal

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Some short-term studies in humans have shown a pronounced negative effect on iron absorption by calcium added to a meal, while other studies show modest or no effects. This suggests that methods for determining iron absorption need to be re-evaluated. Extrapolation of results from some studies on iron absorption have led to the dietary recommendation that the high calcium content, often in the form of milk, of meals containing iron should be decreased to prevent a deterioration in iron status. However, to date, studies on infants, children, girls and pre- and postmenopausal women show no negative effects of high calcium intakes in meals on iron status, even when high levels of calcium (500-1000 mg/day) have been given for long periods (6-12 months). These observations suggest that iron absorption adapts in the presence of high levels of calcium and that iron homeostasis is achieved. Thus, a change in our daily habits of calcium intake appears unwarranted.

Original languageEnglish (US)
Pages (from-to)82-84
Number of pages3
JournalScandinavian Journal of Nutrition/Naringsforskning
Volume43
Issue number2
StatePublished - 1999

Fingerprint

Dietary Calcium
food intake
iron absorption
Iron
iron
calcium
meals (menu)
Calcium
Meals
dietary recommendations
homeostasis
deterioration
Habits
milk
Milk
Homeostasis

Keywords

  • Calcium
  • Calcium intake
  • Iron
  • Iron absorption
  • Iron status

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Food Science

Cite this

Does a high dietary intake of calcium adversely affect iron status in humans? / Lönnerdal, Bo.

In: Scandinavian Journal of Nutrition/Naringsforskning, Vol. 43, No. 2, 1999, p. 82-84.

Research output: Contribution to journalArticle

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