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JOHN CAMPBELL D | Supplement vitamin D year ‘round; plus K2 100 to 200 mcg
presents episode 865 | Dr John Campbell
Dr John Campbell podcast

Question: why obese need higher dose
of vitamin D?
-fat cells store D but don’t use it
-don’t reach same blood plasma level
Some patients take 4k IU a day, okay
others, need up to 10k a day to get
blood levels to 40-50 ng/mL
Vitamin K2?
-100 micrograms if taking 4k IU of D
-if D more than 4k; then need 200 K2

Dr Campbell: our ancestors ate grass
fed meat
-grass fermenting bacteria produced K2
-mass-produced farming has less K2
Fermented foods have more K2
-example: Japan’s natto is the highest
in K2; Muenster cheese also very high

Dr Cohen
Maintain high levels of D the whole year
-not just in winter
“I swim 1 km a day in the sun, still need
vitamin D supplement”
Question: IU ?
-1000 IU is only 25 micrograms
[1000 micrograms in 1 mg]

Question: 1 hour in summer sun?
-about 20k IU of vitamin D
-depends on color of skin & age
-age drops ability of skin to make D
Need sun exposure, but don’t rely on it


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