A simple change in diet could boost
vitamin D levels for millions of Americans suffering from Type 2
diabetes, according to new research from Iowa State University
published in the Journal of Agricultural and Food Chemistry. No
wonder my vitamin D levels are higher than expected. When you eat
more than a dozen eggs per week, I was not aware that this would help
my vitamin D levels.
I just know that a couple of my doctors
go ballistic when I talk about the number of eggs I eat. Then they
insist on increasing the dosage of the statins I take. Fat chance as
I never fill the prescriptions and I plan to stop all statins by the
end of this month.
The fact that this is a rodent study is
disappointing because many rodent studies do not translate to humans.
Vitamin D is important for bone health and many diseases, but people
with diabetes have trouble retaining it along with other nutrients
because of poor kidney function.
Iowa State researchers are most
interested in 25-hydroxyvitamin D-3 (25D) – the form of vitamin D
in the blood that reflects vitamin D status. For that reason, it
made sense to test eggs in the diet rather than other foods
containing vitamin D or a supplement. Eggs are the richest source
of 25-hydroxyvitamin D-3 in the diet, and there isn't any conversion
required to make it into the blood. If you take it in a supplement
or food fortified with vitamin D, it has to be converted to that
form. In addition, eggs are a complete source of protein.
Concentrations of 25D were 148 percent
higher for the egg-fed group and plasma triglyceride concentrations –
a risk factor for cardiovascular disease – dropped 52 percent.
Rowling and colleagues Kevin
Schalinske, professor of food science and human nutrition, and
Samantha Jones, a graduate research assistant, are still working to
understand why more vitamin D is retained from eggs than supplements.
They say it may be related to other components found in eggs.
Please do not skip the egg yolk, which
makes for the complete protein and provides all of the 25D is only in
the yolk. This is what makes the eggs complete and all the nutrients
are in the yolk. Eggs are relatively inexpensive and readily
available. From a vitamin D standpoint, you want to consume the
whole egg.
The next step is to determine the
minimal amount of eggs needed in the diet to yield a benefit. The
study was designed to replace protein in the diet, so the rats were
fed the equivalent of 17 to 18 eggs daily. However, based on the
results and the severity of the rats' diabetes, researchers expect a
much lower dosage will be effective in humans. They also want to
know if health benefits are enhanced when additional dietary
constituents that promote the maintenance of vitamin D status and
reduction of diabetic symptoms, such as fiber, are added to the diet.
You may need even less eggs if you
combine it with something else that does not provide vitamin D per
se, but rather protects the kidney and prevents loss of vitamin D.
Understanding what's going on with egg consumption, promoting vitamin
D balance, and making sure there's a linkage to outcomes whether it's
bone health or kidney health is of utmost importance.