March 30, 2011 |
Vitamin D levels in most Americans are adequate, with only 8% of the population at risk for health problems because of low vitamin D, according to a government report. Vitamin D is one confusing nutrient. Numerous studies in recent years have linked deficiency to a range of health problems and disease risk, including cancer, autoimmune diseases and diabetes. The nutrient also has a well-defined role in bone health. Some doctors and researchers have called for an increase in the recommended dietary intake of vitamin D. But in a report released late last year, the Institute of Medicine declined to raise the values saying: "The IOM finds that the evidence supports a role for vitamin D and calcium in bone health but not in other health conditions.
June 10, 2008 |
Medical researchers are homing in on a wonder drug that may significantly reduce the risk of heart disease, cancer, diabetes and many other diseases -- sunshine. A study released today found that men who are deficient in the so-called sunshine vitamin -- vitamin D -- have more than double the normal risk of suffering a heart attack. Just last week, another study found that low levels of vitamin D increased the risk of diabetes, and a study last month linked deficiencies to an increased risk of dying from breast cancer.
August 1, 2009 |
Vitamin supplements have been both heralded and hyped over the years, only to ultimately fall from grace once research proves them to be little more than placebos in our quest for longer life or better health. But at least one substance may have true merit -- vitamin D. Long considered just a supplement consumed with calcium for bone health, this humble vitamin may have untapped potential in fighting or preventing disease, suggests an explosion of new research.
February 27, 2013 |
More than half of American women over the age of 60 take vitamin D and calcium supplements, but the U.S. Preventive Services Task Force said this week that they're probably wasting their money. In a new recommendations from the federal government's expert panel on preventive medicine, the task force says that most postmenopausal women should not take vitamin D and calcium to reduce their risk of bone fractures. The dosages assessed were 400 international units (IUs) of vitamin D3 and 1,000 milligrams of calcium per day. The conclusions are based on an analysis of six randomized trials designed to study the health effects of vitamin D and calcium supplements.
October 2, 2012 |
If you're trying to ward off the sniffles, you can take vitamin D supplements out of your shopping cart: A new study reports that dosing with the vitamin does nothing to prevent colds or other forms of upper respiratory tract infections (URTI). The effect of vitamin D on the immune system has been debated for a long time. Controlled laboratory research has shown that vitamin D has several beneficial effects on the immune system, and some studies conducted in the past have suggested that people with low levels of the vitamin are at higher risk for URTIs.
December 13, 2010
I was deeply saddened with the Institute of Medicine report that we are a healthy nation in regard to our calcium and vitamin D intakes ["Sweeping Away the Hype About Vitamin D," Dec. 6]. As a physician keenly interested in my patients' nutrition status and needs, I find the report flawed. By arbitrarily setting the lower limit of normal vitamin D blood level at 20 nanograms per milliliter, they are missing the borderline deficiency between 20 and 40 ng/ml. I recommend 2,000 international units of vitamin D per day to my adult patients.
March 15, 2010 |
Raising the amount of vitamin D in the blood appears to help some people -- at least those deficient in the vitamin -- reduce their risk of heart disease by about 30%, researchers announced Monday. The findings, though preliminary, support further investigation of the interplay between vitamin D and heart health. Observational studies have linked heart disease with low vitamin D levels in the blood. In recent years, studies have shown that as many as three-quarters of Americans have a concentration in their blood that is under the normal level of 30 nanograms per milliliter.
December 1, 2010 |
A team of experts convened by the Institute of Medicine sought Tuesday to douse growing concerns that North Americans are deficient in two key nutrients ? calcium and vitamin D ? and that they risk higher rates of a wide range of chronic diseases and cancers as a result. The panel concluded that "with few exceptions, all North Americans are receiving enough calcium and vitamin D" from the foods they eat ? many of which have been fortified with both nutrients. For all but a few, adding more of those nutrients in pill form would be useless at best and, at worst, would risk harm, added the report, which was two years in the making.
April 7, 2003 |
The American Academy of Pediatrics says all exclusively breast-fed infants should receive vitamin D supplements to prevent rickets, a bone-weakening disease doctors fear may be becoming more common. Breast-fed infants should receive vitamin supplements beginning at 2 months of age and until they begin taking at least 17 ounces daily of vitamin D-fortified milk, the academy says.