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Calcium intake, calcium bioavailability and bone health
1Nutritional Sciences, Department of Food Science, Food Technology & Nutrition, University College, Cork, Ireland. k.cashman@ucc.ie
The British Journal of Nutrition
|June 29, 2002
Summary
Adequate dietary calcium intake is crucial for reaching peak bone mass and maintaining skeletal health throughout life. Optimizing calcium absorption through diet is essential for preventing bone loss and osteoporosis.
Area of Science:
- Nutritional Science
- Bone Metabolism
- Public Health
Background:
- Calcium is a vital mineral, comprising 1-2% of human body weight, primarily stored in bones and teeth.
- Dietary calcium intake significantly impacts bone metabolism, with chronic deficiency contributing to reduced bone mass and osteoporosis.
- Ensuring adequate calcium consumption across all life stages is critical for achieving peak bone mass and minimizing age-related bone loss.
Purpose of the Study:
- To review the consequences of inadequate dietary calcium intake on bone health.
- To highlight the importance of optimizing calcium absorption from food sources.
- To explore strategies for enhancing calcium bioavailability, particularly for individuals with insufficient intake.
Main Methods:
- Review of existing literature on calcium metabolism and bone health.
- Analysis of factors influencing dietary calcium requirements and intake levels.
- Discussion of the role of food components in calcium absorption.
Main Results:
- Inadequate dietary calcium intake is a significant factor in reduced bone mass and osteoporosis.
- There is considerable variation in recommended daily calcium intake levels among expert authorities.
- Many individuals do not meet recommended dietary calcium levels, posing a risk to bone health.
Conclusions:
- Adequate calcium intake is essential for bone health at all life stages.
- Optimizing calcium absorption through dietary strategies is crucial for maximizing calcium bioavailability.
- Identifying food components that enhance calcium absorption can help mitigate risks associated with insufficient intake and improve overall bone health.