William C. Shiel Jr., MD, FACP, FACR
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
Catherine Burt Driver, MD
Catherine Burt Driver, MD, is board certified in internal medicine and rheumatology by the American Board of Internal Medicine. Dr. Driver is a member of the American College of Rheumatology. She currently is in active practice in the field of rheumatology in Mission Viejo, Calif., where she is a partner in Mission Internal Medical Group.
In this Article
- Osteoporosis facts
- What is osteoporosis?
- What are osteoporosis causes and risk factors?
- What are osteoporosis symptoms and signs?
- What are the consequences of osteoporosis?
- Why is osteoporosis an important public health issue?
- What factors determine bone strength?
- What tests do health care professionals use in the diagnosis of osteoporosis?
- What types of health care professionals treat osteoporosis?
- Who should have bone density testing?
- What is the treatment for osteoporosis, and can osteoporosis be prevented?
- Exercise, quitting cigarettes, and curtailing alcohol
- Calcium supplements for osteoporosis
- Vitamin D for osteoporosis
- Can adding certain foods to one's diet help to prevent osteoporosis?
- Are there foods to avoid when it comes to osteoporosis?
- Hormone therapy (menopausal hormone therapy)
- Medications that prevent bone loss and breakdown
- Choosing an osteoporosis medication
- Prevention of osteoporosis due to long-term corticosteroids
- Monitoring osteoporosis therapy
- Prevention of hip fractures in elderly people with osteoporosis
- What are complications of osteoporosis?
- What is the prognosis (outlook) for patients with osteoporosis?
- Osteoporosis FAQs
- Find a local Internist in your town
What are osteoporosis causes and risk factors?
The following are factors that will increase the risk of developing osteoporosis:
- Female gender
- Caucasian or Asian race
- Thin and small body frame
- Family history of osteoporosis (for example, having a mother with an osteoporotic hip fracture doubles your risk of hip fracture)
- Personal history of fracture as an adult
- Cigarette smoking
- Excessive alcohol consumption
- Lack of exercise
- Diet low in calcium
- Poor nutrition and poor general health, especially associated with chronic inflammation or bowel disease
- Malabsorption (nutrients are not properly absorbed from the gastrointestinal system) from bowel diseases, such as celiac sprue that can be associated with skin diseases, such as dermatitis herpetiformis
- Low estrogen levels in women (which may occur in menopause or with early surgical removal of both ovaries)
- Low testosterone levels in men (hypogonadism)
- Chemotherapy that can cause early menopause due to its toxic effects on the ovaries
- Amenorrhea (loss of the menstrual period) in young women is associated with low estrogen and osteoporosis; amenorrhea can occur in women who undergo extremely vigorous exercise training and in women with very low body fat (for example, women with anorexia nervosa)
- Chronic inflammation, due to chronic inflammatory arthritis or diseases, such as rheumatoid arthritis or liver diseases
- Immobility, such as after a stroke, or from any condition that interferes with walking
- Hyperthyroidism, a condition wherein too much thyroid hormone is produced by the thyroid gland (as in Grave's disease) or is ingested as thyroid hormone medication
- Hyperparathyroidism is a disease wherein there is excessive parathyroid hormone production by the parathyroid gland, a small gland located near or within the thyroid gland. Normally, parathyroid hormone maintains blood calcium levels by, in part, removing calcium from the bone. In untreated hyperparathyroidism, excessive parathyroid hormone causes too much calcium to be removed from the bone, which can lead to osteoporosis.
- When vitamin D is lacking, the body cannot absorb adequate amounts of calcium from the diet to prevent osteoporosis. Vitamin D deficiency can result from dietary deficiency, lack of sunlight, or lack of intestinal absorption of the vitamin such as occurs in celiac sprue and primary biliary cirrhosis.
- Certain medications can cause osteoporosis. These medicines include long-term use of heparin (a blood thinner), antiseizure medicine such as phenytoin (Dilantin) and phenobarbital, and long-term use of oral corticosteroids (such as prednisone).
- Inherited disorders of connective tissue, including osteogenesis imperfecta, homocystinuria, osteoporosis-pseudoglioma syndrome and skin diseases, such as Marfan syndrome and Ehlers-Danlos syndrome (These causes of hereditary secondary osteoporosis each are treated differently.)
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