why is my vitamin d level so low

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May 26, 2015 By Q:P Im a healthy 61 year old female with an ongoing vitamin D deficiency. My doctor has given me 25,000 IU vitamin D per week over a 10-week period a few times over the last 18 months and my levels continue to remain low (in the 20s). Whats going on here? A: P Based on your information, there are two reasons why your levels may continue to be low. P First, taking 25,000 IU vitamin D weekly only measures up to about 3,570 IU per day. Thats not enough to help increase your serum levels.


You would need at least 5,000 IU daily to make an impact. Some years ago, a study of Nebraskan men found that about 7,000 IU vitamin D3 was needed daily just to maintain serum levels over the winter. P Second, if your doctor is giving you vitamin D, it is likely a prescription for vitamin D2 (ergocalciferol) which is inferior to vitamin D3 (cholecalciferol) in optimizing your vitamin D status. P As a matter of fact, vitamin D2, which is plant-based, shouldnt be used in fortification or supplementation according to an article on the.


Essentially, vitamin D2 has a diminished ability to bind its metabolites to vitamin D binding protein in plasma. Hence, its inefficacy to raise 25-hydroxyvitamin D levels (the standard blood test to measure vitamin D). P Think about it this way: Sunshine and fish consumption provide D3, not D2. Thats the version of vitamin D were supposed to get. P There may be other reasons your vitamin D status remains low. You can read about it. P To your health! Varda Meyers Epstein has suffered from chronic vitamin D deficiency for 20 years and told me that the biggest issue for her is brain fog. "When it's bad, my brain goes foggy and it becomes a real struggle to follow a recipe or do my job," she said, adding that the forgetfulness is especially frustrating because then she forgets to take her vitamin D, creating a vicious cycle.


Unfortunately, this isn't uncommon. Low levels of vitamin D have been in several studies, so what Epstein describes may apply to you too. "It's difficult to describe the brain fog. Like I'm underwater, or not quite awake. Like I need coffee, but no matter how much I drink, I can't wake up. " Still, it wasn't symptoms that led to her initial diagnosis. "My doctor ordered a vitamin D test along with the rest of my labs because the deficiency is common among orthodox Jewish women who cover their hair.


The same is true of Muslim women who wear burqas. " Epstein said that regardless of whether you cover your hair, if women are feeling depressed for no reason and just generally "yucky" they should ask to be tested. "It's a simple test and there's a simple remedy," she said, adding that supplements have helped her a great deal over the years.

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