As many parts of the United States endure a winter chill, researchers at the University of California, Davis, researchers have published noteworthy findings in the current Journal of Nutrition. Their study suggests increasing the current recommended vitamin D intake by at least a factor of five (5). The new study states that in order to achieve vitamin D sufficiency (i.e., at least 75 nm/liter), someone of European ancestry needs 1,300 IU of vitamin D a day. People of African descent require 2,100-3,100 IU daily. Many experts consider that 25(OH)D levels less than 50 nmol/liter indicate vitamin D deficiency.
A pooled analysis published in the British Medical Journal found that the combination of vitamin D and calcium reduced fractures by 8 percent and hip fractures by 16 percent.
The call by Bill Faloon of Life Extension Foundation to test hospital patients for vitamin D status grows in importance as vitamin D deficiency is linked to the following:
- osteopenia and osteoporosis
- muscle weakness and chronic pain
- common cancers
- autoimmune diseases including type I diabetes
- infectious disease
- cardiovascular or heart diseases
Of those aged 50-70 enrolled in a Chinese study, 94 percent tested vitamin D deficient. Vitamin D deficiency is also now linked to metabolic syndrome or insulin resistance. Given the approximately 2,900 studies published to date and the growing awareness of vitamin D deficiency among those who live in the United States, why no public-health action?