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Explanation:

The prefix "osteo-" (as in osteoporosis) refers to the body's bones. The prefix "arthro" or "arth" (before a vowel) refers to the body's joints (as in arthritis).

Explanation:

Osteoporosis is a significant loss of bone density of the skeleton.

Explanation:

Normal bone is composed of collagen, calcium, and protein, all of which give bone its strength.

Explanation:

Characteristics of osteoporosis:
- Decrease in bone density and bone strength
- Abnormally porous bone that is compressible
- Bone fractures
Characteristics of osteoarthritis:
- The breakdown of cartilage in the joints

Explanation:

Swimming is great exercise, but for osteoporosis, nothing beats weight-bearing exercises that work against gravity, including stair-climbing, tennis, dancing, walking, and jogging.

Explanation:

Yogurt has the most calcium, as much as 452 mg for an 8-ounce serving of the nonfat variety.

Explanation:

Osteoporosis can be present without any symptoms for decades because osteoporosis does not cause symptoms until bone fractures. Therefore, patients may not be aware of their osteoporosis until they suffer a painful fracture.

Explanation:

Vitamin D (from foods or supplements) helps your body absorb calcium and regulates the levels of calcium in your bones. It is also called the "sunshine vitamin" because your body can form it naturally when you're out in the sun!

Explanation:

Bone mass (bone density) is determined by the amount of bone present in the skeletal structure. Generally, the higher the bone density, the stronger the bones.

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Children ages 9-18 need the most calcium -- about 1,300 mg each day -- because their bones are growing rapidly. By the end of this period, youths will have established almost 90% of their adult bone mass.

Explanation:

About 20% of people with osteoporosis are men. Testosterone deficiency is the main cause.

Explanation:

Osteoporosis literally leads to abnormally porous bone that is compressible, like a sponge as opposed to a brick. This is caused by a decrease in the density of bone in addition to its decreasing strength and increasing fragility.

Explanation:

More than 99% of the body's calcium is contained in the bones and teeth. The remaining 1% is found in the blood.

Explanation:

Known osteoporosis risk factors include older age, Caucasian or Asian ethnicity, female gender, cigarette smoking, excessive alcohol and caffeine consumption, lack of exercise, diet low in calcium, family history of osteoporosis, poor nutrition and poor general health, malabsorption, low estrogen levels, rheumatoid arthritis, and anorexia.