Posted by ed_uk2010 on April 19, 2014, at 12:17:39
In reply to Re: check your vitamin D » ed_uk2010, posted by Chris O on April 19, 2014, at 10:28:22
> Ed:
>
> Not to highjack Phil's post, but you seem to know a lot about Vitamin D, so I have to ask: Do you think a substantial daily consumption of green day (say, a quart or more a day) for 12-15 years could be lowering my Vitamin D levels? I've been drinking an American brand of bottled green tea called Honest Tea since the late 1990s. My D levels are consistently in the 20s and I live in sunny southern California. I know that tea has a lot of fluoride so I was thinking it might be a possible cause.
>
> ChrisHi Chris,
I don't know the fluoride content of that product specifically, but tea in general is a source of fluoride. Very high fluoride consumption may lead to dental and skeletal fluorosis, rather than vitamin D deficiency specifically. Those who swallow their toothpaste are at greater risk. Are your teeth normal? You can see photos of dental fluorosis online.
I did find a report of skeletal fluorosis in a woman who drunk 1 to 2 gallons of tea per day. Your intake does not sound unusually high. I doubt you have any reason to be concerned. Perhaps just cut down slightly if you are? Green tea is supposed to be beneficial for cognitive function however.
Fluorosis leads to high (rather than low) bone mineral density, but the bone is abnormal in quality and therefore weaker than expected and prone to fracture.
poster:ed_uk2010
thread:1064363
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