You should know your cholesterol and your blood pressure numbers. Now, from current research regarding vitamin D, (technically, it is vitamin D3,) vitamin D deficiency is becoming a consideration to doctors everywhere. To have your vitamin D3 level correctly tested by your doctor, ask him/her to do the blood test called (25OH) D3. Then, when the results come back from the lab, you should be looking at a blood level of 50. The current lab “normal” levels are around 30 but are soon to be upgraded to more accurately reflect the vitamin D deficiency epidemic we are experiencing. To get your blood levels up to 50 either spend 30 minutes a day with your skin exposed to the sun, or, take 5000 IU of vitamin D3 per day and have the blood level checked again in 2 months.
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