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This might be an issue for many of us, who are supplementing Ca in order to adjust for our Vit D intake.

http://www.sciencedaily.com/releases/20 ... 191154.htm

How comes the lable a 30% increase of incidence a "modest increase in risk" - 30% seems pretty high to me.

--Frank

if you just take calcium with vit D, your magnesium absorption can suffer. also if you take both cal and mag at the same time as vit D, the D snaps up all the magnesium for itself. you need to take some magnesium separate from calcium and D3 to support other body processes. magnesium is extremely important for cardiac health, bone health, and much more.

an article on the cal mag balance:
http://www.pccnaturalmarkets.com/sc/040 ... rtadv.html

it's good except for recommending mag citrate - but it's an article from 2004 so maybe that's why.

another article, including info on magnesium glycinate, the 'good one' - ie highly absorbable

Information About Magnesium Gluconate and Magnesium Glycinate link

Thanks for the explanation. In a lecture I have recently seen there was a slide that showed magnesium-carbonat to be much superior to magnesium-citrat, when it comes to bioavailability. Do you think that magnesium-carbonat would also be OK instead of magnesium glycinate?

--Frank

hi frank,

i have read more about mag oxide, citrate and glycinate than i have about carbonate.. from what i understand from the little i've read, it's one of the insoluble forms - not sure how that jives with the high bioavailability side of things..

at the end of the day, the best form is a steady dietary intake of high magnesium foods:
http://www.whfoods.com/genpage.php?tnam ... nt&dbid=75
(you may need to scroll down to see info, that page is displaying oddly for me today)

TMI ALERT!!:
i take glycinate because it's and chelated, which means very soluble and you don't get the runs. if you can take 400-600mg magnesium carbonate per day without ending up spending a lot of time on the toilet, then it's probably a decent product

HTH!

hi frank i checked out the link and that slide talking about bioavailability of carbonate vs citrate was about *calcium* carbonate not magnesium carbonate. and there is no comparison to glycinate.

with calcium you don't have to worry so much about the runs - with magnesium you definitely do.. and hence the mag glycinate recommendation.

i was just looking at a criticism of calcium gluconate, ie not much elemental calcium in a pill.

it may also be true in the case of magnesium supplements, but it's a worthwhile price to pay if it saves you excreting it all the minute it goes in.

FYI my current mag supp delivers 150mg elemental magnesium in a capsule containing 833mg mag bisglycinate (my preferred mag glycinate was back ordered).

TTFN