At least 5,000 IU Vitamin D to get to optimal 50 ng - LEF

When trying to purchase another Vitamin D test at Life Extension Foundation I got the following pleasant message

Life Extension’s research has found that if a person is not taking at least 5000IU of vitamin D a day they will likely be below an optimal blood value of 50ng/mL.

Life Extension suggests most people take this amount for at least 1 month before doing their vitamin D blood test.

Please see our January 2010 magazine article "Startling Findings About Vitamin D Levels in Life Extension Members" for more details.

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See also VitaminDWiki

• Is 50 ng of vitamin D too high, just right, or not enough

• How much vitamin D and other nutrients do I take

• Overview How Much vitamin D

Grassroots

Most people in this study needed > 4800 IU to get to 50 ng X 2.5 = 125 nmol

A few of the variables as to how much vitamin D is needed

USANA agreed with LEF a few years ago (last chart)

Be sure to adjust cofactors when having an optimum level of vitamin D

At a minimum: Reduce Calcium to 500 and increase Magnesum to 500