Related Experiment Video
Updated: Jul 15, 2026

Evaluation of Amino Acid Consumption in Cultured Bone Cells and Isolated Bone Shafts
Published on: April 13, 2022
Americans are not meeting current calcium recommendations
Jun Ma1, Rachel A Johns, Randall S Stafford
1Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University, Palo Alto, CA 94305, USA.
Many Americans do not meet adequate calcium intake recommendations. This study highlights disparities in calcium consumption across demographics, emphasizing the need for improved dietary and supplemental strategies.
Area of Science:
- Nutrition Science
- Public Health
- Bone Health
Background:
- Doubts exist regarding calcium supplementation's efficacy in fracture prevention.
- Adequate calcium intake remains crucial for bone health.
Purpose of the Study:
- Assess dietary and supplemental calcium consumption in US adults.
- Analyze calcium intake based on osteoporosis risk, sex, race/ethnicity, and socioeconomic status.
Main Methods:
- Utilized data from the 1999-2002 National Health and Nutrition Examination Survey.
- Categorized osteoporosis risk (high, moderate, low).
- Measured calcium intake (dietary and supplemental) and likelihood of meeting adequate intake (AI) levels.
Main Results:
- Overall, 40% met calcium AI; 48% took supplements.
- Higher likelihood of meeting AI and taking supplements associated with higher osteoporosis risk, female sex, non-Hispanic white ethnicity, and higher education.
- Significant disparities in calcium intake observed across demographic groups.
Conclusions:
- Many Americans, especially men, ethnic minorities, and the socially disadvantaged, do not meet calcium intake recommendations.
- Dietary calcium alone is insufficient for many to reach adequate intake levels.
- Targeted interventions may be needed to address calcium intake disparities.
Related Concept Videos
Skeleton and Calcium Homeostasis
Essential Minerals for Bone Health
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Role of Vitamins in Maintaining Bone Health
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Urinary Tract Calculi IV: Nutrition Therapy and Prevention
Introduction to Electrolytes
Role of Sodium
One...