I have read several studies that have basically said that people with higher body fat content show lower 25 (OH) d status even when supplementing with relatively high vitamin d intake. The proposed reason for this phenomenon was that the excess fat cells sequester 25 (OH) d and don't allow it into the general circulation as would normally occur in a person with lower body fat if I remember correctly. If that is correct, would a person with high body fat content need to take significantly more vitamin d when on BF?
hi Art, i am somewhat familiar of obesity resulting in lower tested D levels for the same dosage..which makes sense as a larger body has more lipid (fat) storage capacity and i think it works like saline solution in a swimming pool..the larger the pool the lower the salinity. I remember reading that after being absorbed into fat lipids, as blood levels drop, it's slower in coming out of storage which also makes sense in long term survival..as we can get by with very little..ie, prisons, convents, and asylums...although not healthy. I also recall one study on obese Hawaiians with low D levels even with sun..but that may be unrelated
As you know we slightly differ on dosage..i think for many of us with p, from supplement alone, optimum is around 1000-2000iu maybe 3000iu of D in the winter then that considered for anti cancer, etc 4000-5000iu ...i believe its due to this ll37 cytokine which some of us have an abundance of...and which can increase with too much d resulting in increased redness. so i think its fairly individual..it seems to me, too much D yields more redness, less D...more whitish dustings but less redness so D seems to exert control on skin turnover, but too much adds to redness at some trigger point by increasing this ll37 inflammatory cytokine You are not allowed to view links.
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Login and TH17 You are not allowed to view links.
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Login perhaps a protein CCR6.. You are not allowed to view links.
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Login at least thats my grasp of it
Also , I was wondering if a magnesium deficiency can manifest as a lower 25 (OH) d level than what would normally be expected for a given dose of vitamin d?
Lastly, I know that age can play a factor in how well your body is able to convert uv rays into vitamin d in the skin, but does age also affect absorption of oral vitamin d?
i think magnesium is pretty common if we eat a normal diet, You are not allowed to view links.
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Loginoatmeal which is a morning staple for me is full of it..as are many foods..so i don't those who eat well are low and in addition, the formula includes a multivitamin precisely to fill the gaps in some small way.
I don't know how low magnesium interferes with D..perhaps in absorption... As we age its commonly accepted there is a deterioration in the GI tract, bile production etc.. the segmented(SFB) bacteria we have talked about producing th17(and why we try the yogurt), there probably is lower absorption as we age...
bj