Nutrients involved in bone health Flashcards
Trabecular
Spongy part of the bone = 20%
Cortical
Compact and very dense 80%
What is bone resorption?
surface of bones is broken down
What is osteoclasts?
cells that erode the surface of bones
erode the bone and release calcium
What is osteoblasts?
cells that produce the collagen-containing component of bone
build bone and take up calcium
When does peak bone density occur?
before the age of 30
What measures bone density?
DXA - Dual energy x-ray absorptiometry
What nutrients contribute to bone health?
- calcium
- vit d
- vit k
- phosphorus
- magnesium
- floride
What is calcium?
99% stored in bones and teeth
bodys most abundant mineral
What is the daily amount for calcium?
1300mg/day
Parathyroid hormone
Falling blood
- net result is to raise blood calcium
Calcitonin
Raising blood
Net result is to lower calcium
What is Vitamin D?
Hormone
Fat-soluble (stored in fat)
Bone growth (maintains levels of calcium and phosphorus)
What is Phosphorus?
Bone structure = 85%
- Animal protein is the best source
What is magnesium?
Bone structure = 50-60%
synthesis of protein, fats, and nucleic acids
membrane transport
catalyst in energy metabolism
Oysters, spinach
What is floride?
Strengthens bone and teeth (99% is found there)
- water = 0.09-0.14mg/L
- Toothpaste
What aids the production of collagen?
Vitamin C
What vitamin is essential for synthesizing osteocalcin?
Vitamin K2
What is osteocalcin?
important protein which is
secreted by osteoblasts, the body’s bone building cells and plays role in bone formation
