Sunday, April 25, 2010

Vitamin D3

Dr. Feldman’s research focuses on the role of vitamin D in prostate cancer. Studies suggest that vitamin D elevates levels of insulin-like growth factor binding protein 3 (IGFBP-3) in prostate cancer cells, reducing the risk of prostate cancer development and metastasis.
 Another research group, at the University of Rochester, has recently shown that vitamin D inhibits the spread of human prostate cancer cell lines and blocks two critical steps in tumour angiogenesis. 

In a study reported in The American Journal of Clinical Nutrition, 1,179 healthy postmenopausal women were divided into three groups, one taking 1,400-1,500 mg of supplemental calcium, another taking that amount of calcium plus 1,100 IU of vitamin D3, and the third taking a placebo. The researchers found that the women taking calcium and vitamin D3 together had a 60% decrease in their overall cancer risk compared to the other two groups. Researchers described the finding as “a breakthrough of great medical and public health importance. No other method to prevent cancer has been identified that has such a powerful impact.” 
The researchers’ final conclusion: “Improving calcium and vitamin D nutritional status substantially reduces all-cancer risk in postmenopausal women.” Improved lung health A study recently published in Chest, has found that the higher the level of vitamin D in your blood, the better your lungs seem to function. Harvard researchers found that lung cancer patients who had higher levels of vitamin D in their blood and had undergone surgery in the sunnier months were more than 2.5 times more likely to be alive after 5 years than those who had the lowest levels of vitamin D. And it helps treat steroid-resistant asthma. Research conducted at King’s College London revealed that vitamin D supplementation may help patients that don’t respond well to inhaled steroids (the typical asthma treatment) to become more responsive to therapy.
Bone and skeletal health What you probably already know is that vitamin D in essential for calcium absorption and bone formation and strength. Research shows that the more vitamin D one has the less of a risk of breaking a bone. When women took 800 IUs daily of vitamin D the risk of breaking a bone decreased by 33%. Studies have revealed that in winter months bone density can drop up to 4%, reaching the lowest density in early spring. Supplements are required to prevent this drop. An analysis of five studies on the benefits of vitamin D showed that a sufficient daily dose of vitamin D can reduce the incidence of falls in those 65 or over by 22%. Cardiovascular health Vitamin D has been found to relax the large blood vessels, and thus help prevent high blood pressure. 
In a study involving 1,700 participants, those with high blood pressure coupled with low levels of vitamin D were twice as likely to have a heart attack, angina, stroke, heart failure, or other cardiovascular events than those with higher vitamin D levels. Having low levels of vitamin D may also increase the risk of calcium build up in the arteries, a significant component of atherosclerotic plaque. Arthritis help In an 11-year study of 30,000 people, those who consumed the most vitamin D were 30% less likely to develop rheumatoid arthritis. Vitamin D helps keep cartilage healthy and strong, reducing the risk of developing arthritis. If you’re already battling arthritis, research suggests that getting enough vitamin D can slow its progression by 50%.