Yesterday I got my yearly lab results in the mail. All looked good except for my vitamin D levels. Optimum levels according to the Vitamin D Council are around 50 nM/L, and mine were 22 nM/L and outside of the normal range. The doctor left me a note saying to take 2000 IU supplement daily. I was genuinely surprised to be low on vitamin D considering I spend time in the sun on a near daily basis, have been taking prenatal vitamins for over two years, drink two glasses of milk a day and usually have yogurt.
I hopped online to read more about vitamin D deficiency. Here's a couple facts I came across:
- Deficiency can be attributed to lack of nutritional intake (from milk allergies, lactose intolerance, strict vegetarian diets, etc), lack of sun UVB exposure (sunscreen blocks this), and various health disorders.
- If you did not go into the sun, you would need to drink 40 glasses of milk a day to get the needed amount of vitamin D.
- Deficiency can lead to bone softening diseases, and is thought to be linked to stroke, cancer, diabetes, and heart disease, cognitive impairment (memory loss and foggy brain), PMS, and depression (common cause of insomnia).
- There is current research exploring the connection of vitamin D to insomnia.
- Seasonal Affective Disorder (from lack of sunlight in the winter), which is a mood disorder, is often effectively treated with high doses of vitamin D supplements.
- Vitamin D levels can take time to build back up.
- Getting enough vitamin D through food (oily fish, spinach, broccoli, fruits fortified milk and yogurt) is unlikely.
Some links for your curiosity:
http://www.womentowomen.com/healthynutrition/vitamind.aspx
http://en.wikipedia.org/wiki/Vitamin_d
http://ods.od.nih.gov/factsheets/vitamind.asp#h5
http://www.fightingfatigue.org/?p=1220
http://www.usdoctor.com/insomnia.htm (I don't know the credibility of this site, but he claims D3 cures insomnia.)
http://nutrition.suite101.com/article.cfm/vitamin_d_deficiency_and_insomnia






