1

votes

Does beta-carotene compete with vitamin D?

Answered on August 19, 2014
Created February 14, 2012 at 4:19 PM

4 months ago I started having rashes at random moments. I never understood what it was. Now it looks like it's a retinol supplement I was taking sporadically. I know I don't tolerate pumpkin and carrots very well, and I also know I was severely vitamin-D deficient after spending 3 weeks in the dark 1 year ago.

When I upped my vitamin-D dose, the rashes didn't occur as often. I experimented for 2 days now, and I haven't had any problems.

Is it possible that the beta-carotene in pumpkin etc. competes with vitamin-D absorption?

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 15, 2012
at 05:02 PM

10 K of A? If you are eating liver, eggs & vegetables, then there is NO reason to supplement A. 10K of D is perfect to get your levels up.

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:57 AM

The last study I found is http://www.ncbi.nlm.nih.gov/pubmed/20714107. I haven't been diagnosed with cystic fibrosis, but it certainly is a possibility : I've always had mucus problems and had slightly enlarged hands (I once said that I have worker's hands without doing sh*t :D). It all comes down to D3 for me. I'll have to test out more, and if I have to I'll pay the 200 euros to get my blood tested. That's really a lot though...

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:41 AM

If retinol competes with D3, it is very likely that I'm still not high in D3 (since I supplemented 30-40k IU retinol for months against skin issues but later I found out it didn't really do anything). My whole life, my problems disappeared in the summer. In the winter I get patches on my legs, I get sinus issues, ... Two years ago I went to Wales, the weather was horrible and that's where I started to get sick. 1 year ago I spend 2 weeks in total darkness and became very very very very sick (extreme paleness, brittle hair, ...).

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:39 AM

I also believe the rashes are atopic dermatitis, since my face flushes and the rashes only occur on my hands and elbows (http://upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Pattern_of_atopic_eczema_varies_with_age.png/541px-Pattern_of_atopic_eczema_varies_with_age.png) which could be explained by this study : http://www.ncbi.nlm.nih.gov/pubmed/21087229

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:36 AM

Right now I'm taking 10k IU, but I hope that won't be too much (or too little...) in the long run. About my allergic rashes : the only allergies I'm aware of are grass pollen and mold allergy. I know that vitamin D helps with mold allergies (http://www.ncbi.nlm.nih.gov/pubmed/21401575) and I still have sinus issues (they are way down, but still not gone).

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:17 AM

The doctor only tested once, after I begged him 4 times for a blood test. That's some time ago, but he won't do a second test to check where I'm at. I've tried finding private laboratories but they all need doctor's prescriptions or it's extremely expensive.

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 14, 2012
at 07:51 PM

Testing IS really necessary, but I would supplement as suggested for 3 months first.

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 14, 2012
at 07:51 PM

I'm confused. How do you know your level is at 9 ng/ml, then?

5e5ff249c9161b8cd96d7eff6043bc3a

(4713)

on February 14, 2012
at 07:08 PM

Seems pretty necessary if you were at 9ng/ml...

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 14, 2012
at 05:25 PM

That's the thing : I could technically get a blood test if I want to, but my doctor really doesn't want to do it unless it's really necessary. I've been using the D3 of healthy origins (olive oil capsules). On iHerb it's cheaper than NOW...

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 14, 2012
at 05:22 PM

9 ng/ml?! Ouch. If it were me, I would supplement 10,000 IUs for 3 months & then test again & adjust. (Make sure you get an oil-based form-Carlsons Solar D Gems are the best, IMO, NOW brand D3 is cheaper.

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 14, 2012
at 04:57 PM

I guess FODMAPS may be an issue, but I tolerate onions fine. I also eat quite a lot of apples without ill effects. How much vitamin D do you think would be necessary daily to get from 9ng/ml to above 50?

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1 Answers

2
Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 14, 2012
at 04:50 PM

Two different things going on here, from what I can see.

Not tolerating pumpkins and carrots may be FODMAPS intolerance.

Yes, Vitamin D & A can compete for some of the same receptors. Best to get your D level tested and supplement/sun to sufficiency (50 - 60 ng/ml.)

IMO, Vitamin A from all sources doesn't need to be more than 10,000 IUs/day. Most Primal/Paleo folk do not need to supplement A--we get plenty from our diet--especially if you are eating liver.

Look up some of the previous questions on Vitamin A toxicity and D:A ratios.

5e5ff249c9161b8cd96d7eff6043bc3a

(4713)

on February 14, 2012
at 07:08 PM

Seems pretty necessary if you were at 9ng/ml...

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:17 AM

The doctor only tested once, after I begged him 4 times for a blood test. That's some time ago, but he won't do a second test to check where I'm at. I've tried finding private laboratories but they all need doctor's prescriptions or it's extremely expensive.

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 14, 2012
at 05:22 PM

9 ng/ml?! Ouch. If it were me, I would supplement 10,000 IUs for 3 months & then test again & adjust. (Make sure you get an oil-based form-Carlsons Solar D Gems are the best, IMO, NOW brand D3 is cheaper.

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:57 AM

The last study I found is http://www.ncbi.nlm.nih.gov/pubmed/20714107. I haven't been diagnosed with cystic fibrosis, but it certainly is a possibility : I've always had mucus problems and had slightly enlarged hands (I once said that I have worker's hands without doing sh*t :D). It all comes down to D3 for me. I'll have to test out more, and if I have to I'll pay the 200 euros to get my blood tested. That's really a lot though...

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 14, 2012
at 07:51 PM

I'm confused. How do you know your level is at 9 ng/ml, then?

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 14, 2012
at 07:51 PM

Testing IS really necessary, but I would supplement as suggested for 3 months first.

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:39 AM

I also believe the rashes are atopic dermatitis, since my face flushes and the rashes only occur on my hands and elbows (http://upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Pattern_of_atopic_eczema_varies_with_age.png/541px-Pattern_of_atopic_eczema_varies_with_age.png) which could be explained by this study : http://www.ncbi.nlm.nih.gov/pubmed/21087229

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 14, 2012
at 05:25 PM

That's the thing : I could technically get a blood test if I want to, but my doctor really doesn't want to do it unless it's really necessary. I've been using the D3 of healthy origins (olive oil capsules). On iHerb it's cheaper than NOW...

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 14, 2012
at 04:57 PM

I guess FODMAPS may be an issue, but I tolerate onions fine. I also eat quite a lot of apples without ill effects. How much vitamin D do you think would be necessary daily to get from 9ng/ml to above 50?

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:36 AM

Right now I'm taking 10k IU, but I hope that won't be too much (or too little...) in the long run. About my allergic rashes : the only allergies I'm aware of are grass pollen and mold allergy. I know that vitamin D helps with mold allergies (http://www.ncbi.nlm.nih.gov/pubmed/21401575) and I still have sinus issues (they are way down, but still not gone).

Ce41c230e8c2a4295db31aec3ef4b2ab

(32556)

on February 15, 2012
at 05:02 PM

10 K of A? If you are eating liver, eggs & vegetables, then there is NO reason to supplement A. 10K of D is perfect to get your levels up.

B0fe7b5a9a197cd293978150cbd9055f

(8938)

on February 15, 2012
at 08:41 AM

If retinol competes with D3, it is very likely that I'm still not high in D3 (since I supplemented 30-40k IU retinol for months against skin issues but later I found out it didn't really do anything). My whole life, my problems disappeared in the summer. In the winter I get patches on my legs, I get sinus issues, ... Two years ago I went to Wales, the weather was horrible and that's where I started to get sick. 1 year ago I spend 2 weeks in total darkness and became very very very very sick (extreme paleness, brittle hair, ...).

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