Vitamin D is an important ____ that plays many ____ roles in the body. ____ levels of vitamin D have been linked to a host of health ____, including a ____ in cognitive function. A study that followed 318 older adults for 5 years found that those who had ____ levels of vitamin D less than 20 nanograms (ng) per millilitre (mL) lost their ____ and other cognitive abilities faster than those with normal vitamin D levels. Low levels of vitamin D have also been linked to a greater ____ developing dementia. Vitamin D ____ is very common, especially in colder climates and in those with ____ skin. Speak with your doctor about getting a blood ____ to find out if you need a vitamin D ____.

5. Get your vitamin D levels tested

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