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From: Mark Rifkin (
Subject:         Re: Sources of reliable vegan-oriented information
Date: March 22, 2009 at 7:42 pm PST

In Reply to: Re: Sources of reliable vegan-oriented information posted by Sammy on March 19, 2009 at 9:32 pm:

Hi Sammy,

I asked Dr. Greger (whom I generally agree with), about his 4000 IU recommendation, but never received a reply. I suspect it may originate in the research that D2 is about 50% as effective as D3, and 2000 IU of D3 is now being recommended by many authorities. Other research suggests D2 and D3 are equally effective.

IMO, the best barometer of someone's Vit D needs is a blood test. Someone who works indoors and is 65 years old may need a lot more than a 40 year old who works outside, even if they are both living in, say, New York City (north of the line of effective exposure). The blood test tells us specific status, while a blanket recommendation may/may not be an accurate reflection of needs.

I haven't read Esselstyn's book (and have no plans to), so I don't know what his other sources are. Yes, we probably are getting 3 T of olive oil in a pasta meal, but that's likely because we're getting 4 or 5 cups of pasta!

I am also suspicious that many restaurants and consumers are using rancid oils, esp. as we decrease daily oil intake, which prolongs bottle life; this of course is more of a concern in warmer regions. I encourage everyone to store any liquid oil in the refrigerator.

I'm working on a website, so my philosophy will be posted there. Thanks for letting me know you appreciate my rebellious nutrition philosophy!

Let me know if I can help in any other way,
Mark Rifkin, MS, RD

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