Older people are also at risk for vitamin D deficiency.

I never thought about a vitamin D deficiency, but it makes a lot of sense.

Nevertheless, vitamin D deficiency is more common than you might expect.

Blood testing showed that half of them had a vitamin D deficiency.

Vitamin D deficiency is associated with an increase in high blood pressure and cardiovascular risk.

The combination of high blood pressure and vitamin D deficiency could be deadly.

In recent years, many studies have linked vitamin D deficiency to a host of health problems, including cancer and heart disease.

One cause of vitamin D deficiency is limited exposure to sunlight.

A vitamin D deficiency is a known cause of rickets.

Find out more about Vitamin D deficiency in this section.

In fact, the risk for vitamin D deficiency in people over 65 years of age is very high.

However, much higher doses are often needed for the short-term treatment of vitamin D deficiency.

Some studies show that older adults with darker skin are at high risk of vitamin D deficiency.

The reasons for this are unclear, but may be related to vitamin D deficiency during the winter.

I'm absolutely fascinated by this, never knew there was a potential connection to vitamin D deficiency.

Vitamin D deficiency may stem from lack of exposure to sunlight.

It has been suggested that vitamin D deficiency is associated with cardiovascular risk factors.

The possible role of other factors such as caffeine consumption, and vitamin D deficiency are less clear cut.

Ironically, there are indications that vitamin D deficiency may lead to skin cancer.

The physician talks about our national vitamin D deficiency.

Studies find vitamin D deficiency can affect adults, infants, children, and adolescents.

Vitamin D deficiency can occur for a number of reasons:

"It makes sense to me that vitamin D deficiency is correlated with depression or anxiety," he says.

So who's at risk of vitamin D deficiency?

There's evidence that vitamin D deficiency may increase the risk of many diseases: