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Related Concept Videos

Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect 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 Health01:25

Role of Vitamins in Maintaining Bone Health

The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
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...
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
The Bone Matrix01:18

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...

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Related Experiment Video

Updated: May 27, 2026

Evaluation of Amino Acid Consumption in Cultured Bone Cells and Isolated Bone Shafts
06:32

Evaluation of Amino Acid Consumption in Cultured Bone Cells and Isolated Bone Shafts

Published on: April 13, 2022

Protein intake and bone health.

Jean-Philippe Bonjour1

  • 1Division of Bone Diseases, University Hospitals and Faculty of Medicine, Geneva, Switzerland. jean-philippe.bonjour@unige.ch

International Journal for Vitamin and Nutrition Research. Internationale Zeitschrift Fur Vitamin- Und Ernahrungsforschung. Journal International De Vitaminologie Et De Nutrition
|December 6, 2011
PubMed
Summary

Adequate dietary protein intake is crucial for bone health and osteoporosis prevention. Higher protein intake may reduce fracture risk, especially in the elderly, where current recommendations might be insufficient.

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Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
07:56

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

Related Experiment Videos

Last Updated: May 27, 2026

Evaluation of Amino Acid Consumption in Cultured Bone Cells and Isolated Bone Shafts
06:32

Evaluation of Amino Acid Consumption in Cultured Bone Cells and Isolated Bone Shafts

Published on: April 13, 2022

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
07:56

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

Area of Science:

  • Nutrition Science
  • Gerontology
  • Orthopedics

Background:

  • Adequate nutrition, including dietary protein, is vital for bone health and preventing osteoporosis.
  • Studies suggest a positive link between high protein intake and bone mineral density, potentially reducing hip fracture incidence.
  • Low protein intake is common in hip fracture patients, and supplementation can aid recovery.

Purpose of the Study:

  • To review the role of dietary protein in bone health and osteoporosis prevention.
  • To assess the impact of protein intake on bone mineral density and fracture risk.
  • To evaluate protein supplementation's effects in post-fracture patients and the elderly.

Main Methods:

  • Literature review of studies on protein intake, bone health, and osteoporosis.
  • Analysis of prospective studies and intervention trials.
  • Examination of protein requirements in different age groups, particularly the elderly.

Main Results:

  • Higher protein intake is associated with improved bone mineral density and reduced hip fracture risk.
  • Protein supplementation post-fracture can mitigate bone loss, enhance muscle strength, and shorten hospital stays.
  • Current protein recommendations may be inadequate for elderly individuals to prevent fragility fractures.

Conclusions:

  • Dietary protein is a key nutrient for bone health and osteoporosis prevention.
  • While high protein intake is generally beneficial, very high intake with low calcium should be avoided.
  • Protein intake recommendations may need adjustment for the elderly to ensure adequate bone health and fracture prevention.