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Related Experiment Videos

Calcium and weight: clinical studies.

Robert P Heaney1, K Michael Davies, M Janet Barger-Lux

  • 1Creighton University, Omaha, Nebraska 68131, USA. rheaney@creighton.edu

Journal of the American College of Nutrition
|May 10, 2002
PubMed
Summary

Higher calcium intake is linked to lower body weight and body fat. Increasing calcium intake, like from two daily dairy servings, may significantly reduce overweight risk.

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Area of Science:

  • Nutrition Science
  • Human Physiology
  • Public Health

Background:

  • Calcium is essential for bone health, but its role in body weight regulation is less understood.
  • Previous research has explored calcium's impact on bone mass and blood pressure.

Purpose of the Study:

  • To reanalyze existing data to evaluate the effect of calcium intake on body weight and body fat.
  • To determine the quantitative relationship between calcium intake and body composition changes.

Main Methods:

  • Reanalysis of data from six observational studies and three controlled trials.
  • Calcium intake was the independent variable, with body weight and body fat as outcome variables.

Main Results:

  • Higher calcium intakes were consistently associated with lower body fat and body weight.
  • Each 300 mg increment in calcium intake correlated with approximately 1 kg less body fat in children and 2.5-3.0 kg lower body weight in adults.
  • Calcium intake showed a negative association with body weight at midlife and body fat accumulation during childhood.

Conclusions:

  • Increased calcium intake, equivalent to two daily dairy servings, may substantially reduce overweight risk by up to 70%.
  • Dietary calcium plays a significant role in regulating body weight and body fat accumulation across different age groups.

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