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Calcium absorption from milk in lactase-deficient subjects.
M Griessen1, B Cochet, F Infante
1Division of Gastroenterology and Nutrition, University of Geneva Hospital and Geneva University, Switzerland.
The American Journal of Clinical Nutrition
|February 1, 1989
Summary
Lactose in milk enhances calcium absorption in lactase-deficient individuals, suggesting milk is beneficial for them. Glucose-based drinks offer an alternative for lactose-intolerant patients.
Area of Science:
- Gastroenterology
- Nutritional Science
- Human Physiology
Background:
- Calcium absorption is crucial for bone health.
- Lactose intolerance affects a significant portion of the population.
- The role of lactose in calcium absorption among lactase-deficient individuals requires clarification.
Purpose of the Study:
- To investigate intestinal calcium absorption in lactase-deficient versus normal lactase subjects.
- To compare calcium absorption from milk with lactose versus glucose.
- To determine if lactase deficiency impacts calcium absorption.
Main Methods:
- Utilized a double-isotope technique to measure calcium absorption.
- Employed deconvolution methods to obtain kinetic indices.
- Compared calcium absorption from milk (with lactose or glucose) and a water solution.
Main Results:
- Calcium absorption was similar in normal lactase and lactase-deficient subjects when ingesting glucose-based milk or water.
- Calcium absorption increased significantly in lactase-deficient subjects consuming milk with lactose.
- Normal lactase subjects showed no difference in calcium absorption between milk with lactose and water.
Conclusions:
- Milk is an effective source of calcium, comparable to water solutions.
- Lactose in milk enhances calcium absorption in lactase-deficient individuals.
- Milk consumption may be advisable for lactase-deficient individuals to prevent calcium deficiency, while glucose-based alternatives benefit lactose-intolerant patients.