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Author Topic: Vitamin D And Kidney Disease  (Read 9167 times)

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Vitamin D And Kidney Disease
« on: May 22, 2019, 06:22:49 AM »

You may know that the sun and certain foods are good sources of vitamin D. But did you know that due to chronic kidney disease, millions of Americans can't convert the form of vitamin D produced by the sun or found in food and over-the-counter vitamins into the active form of vitamin D used by the body? This means that even if you're taking vitamin D pills, getting adequate sunlight or eating foods rich in vitamin D, your bones and organs may be at risk due to a deficiency in "active" vitamin D.

Chronic Kidney Disease

Chronic kidney disease (CKD) is a condition in which kidney function slows and the kidneys stop doing critical jobs such as filtering toxins from the bloodstream.

The severity of CKD is classified in stages, with stage 5, also known as kidney failure or end-stage renal disease (ESRD), being the most severe. Patients with ESRD require dialysis, a procedure where several times a week for several hours their bloodstream is routed through a machine that filters toxins.

40 million Americans with

or at risk for chronic

kidney disease

Early-stage CKD-before dialysis is necessary-is often undetected and can worsen with declines in kidney function.

According to the National Kidney Foundation, 20 million Americans-1 in 9-have CKD and another 20 million are at increased risk.

So what does CKD have to do with vitamin D, let alone

your bones?

Before the body can use vitamin D, it has to be "activated." Inactive vitamin D-the vitamin D you get in the form of over-the-counter pills, food or sunlight-is activated by two steps, one in the liver and the other in the kidneys.

Then, much like a key fits into a car ignition and starts the engine, activated vitamin D fits into vitamin D receptors located in numerous tissues and systems throughout the body and triggers processes that help maintain bone, the heart, the immune system and so on.

For people with CKD, however, their kidneys' ability to activate adequate amounts of vitamin D deteriorates as their overall kidney function decreases. In fact, people with kidney disease may eventually lose the ability to activate vitamin D altogether.



When levels of active vitamin D are low or inadequate within the body, a serious complication of CKD called secondary hyperparathyroidism (SHPT) can occur. SHPT can lead to a wide range of problems, including damage to bones and many vital organs.

How is SHPT prevented

and treated?

When CKD and SHPT are detected early, the conditions may be managed and disease progression may be slowed.

Remember, people with stage 3 or 4 CKD who develop SHPT cannot convert vitamin D into its active form within their own kidneys. Experts suggest that these patients with stage 3 or 4 CKD and SHPT take an activated form of vitamin D medication-which is available only by prescription-to correct their vitamin D deficiency and thereby treat SHPT. Managing SHPT lowers risk for bone loss or fracture, cardiac complications and dangerous mineral and hormonal imbalances.


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