Vitamins Information
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Vitamin C: Tips For Increasing Your Intake
A new RDA?
According to a recent issue of the Journal of the American Medical Association (JAMA), the National Institutes of Health is taking another look at the Recommended Daily Allowance (RDA) for vitamin C. The current RDA for vitamin C is 60 milligrams per day—about the amount you get from one orange. Due to recent findings on the potential health benefits of this wonder vitamin, the NIH is now considering boosting the RDA to somewhere between 100 and 200 milligrams per day, two to three times the current recommendation.
Why all the hype?
Vitamin C has long been known for its value as an antioxidant. Antioxidants are natural compounds found in many of the foods we eat. The most well known antioxidants are vitamin C, selenium, beta carotene and vitamin E. Antioxidants work by inhibiting toxic substances in the body (also known as "free radicals") which may lead to the development of cancers, heart disease and the aging process. There has been a strong correlation between diets high in fruits and vegetables (which are rich in antioxidants) and reduced risk of chronic diseases. Vitamin C may account for much of this protection. However, we are also finding numerous other compounds within fruits and vegetables, collectively called "phytochemicals", that may also play a preventative role. Phytochemicals are defined simply as chemicals found in plants. They occur naturally in fruits, vegetables, grains, nuts and seeds. These substances, many of which also have an antioxidant effect, may protect our bodies from cellular damage that can lead to cancer and other chronic diseases.
Due to the strong correlation between diets abundant in fruits and vegetables and disease prevention, The National Cancer Institute launched the "5-A-Day" program. The basis of this campaign promotes the intake of a minimum of five fruits and vegetables daily as a good defense against cancer and other diseases. A specific recommendation of this program is to include vitamin C rich fruits and vegetables in the diet each day since vitamin C is a particularly well-researched antioxidant. The mainstay of the program, however, is that by eating five servings of produce daily we can easily take in not just a good dose of vitamin C, but the minimum amount of protective plant chemicals shown to be effective in reducing risk of chronic diseases. Remember, five is the minimum amount. In the case of fruits and veggies it's definitely a situation where more is better!
Forteo Approved for Drug-Related Osteoporosis
FRIDAY, July 24 (HealthDay News) -- Eli Lilly's Forteo (teriparatide injection) has received expanded approval from the U.S. Food and Drug Administration to treat osteoporosis associated with long-term use of glucocorticoid medication, the company said Thursday.
Glucocorticoid therapy is commonly prescribed for inflammatory conditions including rheumatoid arthritis and obstructive lung disease. These drugs are among the most common causes of secondary osteoporosis, which increases users' risk of bone fracture, Lilly said in a news release.
As many as three of every 100 adults over age 50 use this type of medication, Lilly said, and of those, about half will eventually have an osteoporotic bone fracture.
In clinical testing among patients with glucocorticoid-induced osteoporosis, Forteo increased bone mineral density after 18 months of use by an average of 7.2 percent at the spine, 3.6 percent at the hip, and 3.7 percent at the neck, the company said.
The drug should never be used by children and young adults whose bones may still be growing. And in rare cases, users have developed a form of bone cancer called osteosarcoma. It's not known if the drug increased their risk, Lilly said.
More information
To learn more about glucocorticoid-induced osteoporosis, visit the American College of Rheumatology.
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