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Nutrition, Diet and Supplements Discuss nutrition, diet, cutting and weight loss. Supplement discussions as well.

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Old 05-03-2013, 01:28 PM   #1
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Default vitamin d3

vitamin d is a steroid hormone
it;s delivered in 2 forms
d2 and d3

most studies show that d3 is most bio available to the human
human,unlike animal can't produce it and has to take it from food
which is difficcult
there's also the alternative to create vitamin d3 with exposure to sunlight
from my understandind after reading articles and studies is that in order ur body to absort d3 from the sun you must not wash the skin for 48 hours after the sun exporsion

de is needed for bone healh,among others,it's critical for calcium metabolism

some links :


Vitamin D - In-Depth Scientific Supplement Information | Examine.com


Vitamin D: The ?sunshine? vitamin





(this post is just an intro to vitamin d,more will come)
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Old 05-03-2013, 01:44 PM   #2
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you can measure the d3 levels in your bloodstream with this test


25-hydroxy vitamin D test: MedlinePlus Medical Encyclopedia
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Old 05-04-2013, 04:02 PM   #3
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Quote:
Originally Posted by justme View Post
vitamin d is a steroid hormone
it;s delivered in 2 forms
d2 and d3

most studies show that d3 is most bio available to the human
human,unlike animal can't produce it and has to take it from food
which is difficcult
there's also the alternative to create vitamin d3 with exposure to sunlight
from my understandind after reading articles and studies is that in order ur body to absort d3 from the sun you must not wash the skin for 48 hours after the sun exporsion

de is needed for bone healh,among others,it's critical for calcium metabolism

some links :






(this post is just an intro to vitamin d,more will come)
I have never heard that about not washing the skin after exposure to the sun. Guess that I am not really getting much out of it then since I refuse to go that long without a shower. I am a daily shower guy.
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Old 05-04-2013, 04:16 PM   #4
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Originally Posted by hobbz View Post
I have never heard that about not washing the skin after exposure to the sun. Guess that I am not really getting much out of it then since I refuse to go that long without a shower. I am a daily shower guy.
Unfortanatly so. Dr Mercola (mercola.com) has good info and useally sites things. He is mr sunshine and vitamin d... but yeah i shower daily too and it's a pain... It works not to soup up everywhere everyday... arm pits, ass, crotch, feet, daily washed with soup...others however you feel. That's one good advice he gives.
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Old 05-06-2013, 03:31 PM   #5
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. Dr Mercola (mercola.com) has good info
Just for a bit of balance, many regard him as a major source of misinformation. He's high up on quackwatch.com radar and has been described as an 'uber-quack'. e.g. Joe Mercola: Proof positive that quackery sells – Respectful Insolence

My own view is that in general, if you do the complete opposite of what Mercola advocates, you'll be fine.


Coincidentally, I was just about to post this and I found another post from that blog, in which the author invited people to send in their nominations for Mercola's worst quackery over a fifteen year span/.

Someone volunteered this:


Quote:
I was particularly taken by Mercola’s claim a few years ago that you shouldn’t shower after sunbathing because you will wash the vitamin D-3 off. In humans photochemical conversion of 7-dehydrocholesterol to D-3 takes place several layers deep in the epidermis. In birds and furry animals photochemical conversion of precursors in oily secretions takes place on the surface of the skin and is ingested during grooming, but not in humans. It’s not the worst example of how he gets things wrong, but it is my personal favorite
I don't know anything about D3 synthesis, so I can't comment on the rights or wrongs of it, but it's another take.
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Old 05-07-2013, 02:14 PM   #6
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Originally Posted by Tannhauser View Post
Just for a bit of balance, many regard him as a major source of misinformation. He's high up on quackwatch.com radar and has been described as an 'uber-quack'. e.g. Joe Mercola: Proof positive that quackery sells – Respectful Insolence

My own view is that in general, if you do the complete opposite of what Mercola advocates, you'll be fine.


Coincidentally, I was just about to post this and I found another post from that blog, in which the author invited people to send in their nominations for Mercola's worst quackery over a fifteen year span/.

Someone volunteered this:




I don't know anything about D3 synthesis, so I can't comment on the rights or wrongs of it, but it's another take.

Mercola does have a large amount of information on his site and a good point for most people to start. However, they need to look deeper into topics... and he does make claims that get on my nerves and has a lot of overpriced and useless products.

For example, I never bothered looking into Vitamin d3 and so on because as someone stated it was more of a matter of consistency. The uber low carb/no carb, etc dogma gets annoying, but most of his readers are not athletes.

Point stands that his multi vitamin is great. One of the only supplements I buy. His views on gmo's, and fats are dead on... those are the things that matter most to the health of the over all population... and low carb helps them too, but again he goes wrong about demonizing them...
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Old 05-07-2013, 02:40 PM   #7
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Originally Posted by BravenFenix View Post
Mercola does have a large amount of information on his site and a good point for most people to start. However, they need to look deeper into topics... and he does make claims that get on my nerves and has a lot of overpriced and useless products.

For example, I never bothered looking into Vitamin d3 and so on because as someone stated it was more of a matter of consistency. The uber low carb/no carb, etc dogma gets annoying, but most of his readers are not athletes.

Point stands that his multi vitamin is great. One of the only supplements I buy. His views on gmo's, and fats are dead on... those are the things that matter most to the health of the over all population... and low carb helps them too, but again he goes wrong about demonizing them...
Well, we may have to agree to disagree. I think he's an absolutely terrible place to start for anyone. His views on fats are mistaken. I don't know what his views on GMOs are but I can guess. I just know somehow that he will have that all wrong too, because he gets everything wrong.

The fact that he dispenses health information and makes a very, very good living selling supplements should be screaming 'conflict of interest.' My view is that if your diet is reasonable you're better off not taking a multivit. And what's a good or bad multivit? Surely it's largely a question of market positioning - some aim for high profit margin by selling 'top end' multvits at a lower volume, some go for cheap and cheerful multivits sellingat a low margin but in bulk. How much difference can there be in content?

People like him do an emormous amount of damage. He exploits public distrust of any official agency by asserting that the 'official' version of nutrition cannot be correct. He is responsible for propagating nonsense about vaccinations and immunisation that, sadly, some people buy into - the greatest achievement of 20th century medicine, responsible for saving millions from ghastly diseases, rubbished by a two-bit quack.

He's a persuasive writer, and a successful businessman. But there are proper nutritional scientists out there on the net who have hundreds of articles published in peer-reviewed journals, who've devoted their whole lives to studying nutrition. Any if them would be a better place to start than him.
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Old 05-06-2013, 01:28 PM   #8
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Interesting. I have never heard this before either. I have to wash daily just can not get around it with me working out.
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Old 05-06-2013, 01:47 PM   #9
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when you start thinking about changing how you wash your body, i think you're overestimating the effects and the importance of D3. as long as you eat regularly, eat a somewhat balanced diet, and don't have an eating disorder, you will get plenty of vitamin D3. the idea that maximizing micronutrient intake will have a noticeable effect on your progress in the gym or on your overall health is misguided.

by the way, D3 resembles a steroid hormone but it is not an activated hormone itself. also, it doesn't have any effect on muscle or strength gains. its primary association is with more efficient uptake of calcium. that's part of why dairies infuse milk with vitamin D3: milk already has calcium, so if you add D3, you increase your body's ability to use the calcium in milk.

fitness and strength aren't about bizarre rituals, arcane practices, and secret knowledge. it's about tried-and-true practices, mastering the basics, and, above all, consistency. it's not about anxiety over micronutrients.

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Old 05-06-2013, 01:50 PM   #10
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Yep, wash and eat the fish instead

Vitamin D3 is available in the form of fish; I can't recall whether it converts from one D to another or from D3 to D but fish is a good source of vit D3, however it works out.
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