Sunny Futures with Vitamin D
by Eric Robert Santiago on 07/16/12
Vitamin D may be a key to
healthier, more active aging. That’s what current studies are trying to
determine. Vitamin D plays a role in musculoskeletal, immune,
neurological, and cardiovascular health. One recent
study in elderly subjects showed an association between higher
circulating vitamin D levels and greater long-term health and physical
function. Research also suggests that adequate vitamin D nutrition may
help protect against osteoporosis, high blood pressure, certain
autoimmune diseases, and other serious conditions.
Nearly 3 out
of 4 adults and teens may be deficient in the “sunshine” vitamin.
Deficiency risk increases with age, skin pigment, and limited sunlight
exposure, and is also associated with diabetes, kidney disease, obesity,
and inflammatory bowel disease or other gastrointestinal disorders—such
as fat malabsorption. Current daily intake recommendations (400 IU to
600 IU) are primarily based on bone health, and it has been suggested
that higher levels may be necessary to maintain optimal physical
function, muscle strength, and other health functions. Several health
organizations and nutritional councils are expected to provide revised
guidelines for higher daily intake soon. Those with diagnosed
deficiencies may require temporary daily doses of up to 5,000 IU.†
A good source of vitamin D may be hard to find. Our bodies manufacture
vitamin D3 when skin is exposed to the sun’s ultraviolet-B rays—which
can be blocked by both windows and sunscreen. And vitamin D is found
naturally only in a few foods (e.g., fish, eggs). That’s why products
like milk are vitamin D-fortified, sometimes with the less absorbable
vitamin D2 form. Dietary supplements are often recommended, but vary in
quality and may be made from vitamin D2 or D3. And D3 supplements may be
3 times more effective than D2 at increasing vitamin D levels in the
body. The supplement delivery form and manufacture may also influence
absorption potential, so it’s just as important with this “basic”
vitamin to seek higher quality for maximum benefits. After all—it may
impact your quality of life down the road!
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