Re: Fw: [CR] Recommendations for Vitamin D should be revised upward

[Guest guest]

Hi JW:

I did a Google search a while back for vitamin D and found a credible

source which said that enough sunlight to get even the mildest skin

pigmentation gave a massive dose of D (IIRC 10,000 IU).

So skin coloration, if sun exposure is regular, is not necessary

nutrition-wise.

Rodney.

--- In , " jwwright " <jwwright@e...>

wrote:

>

> Here is says we use 4000 IU and get 90% from sunlight.

> Assuming what we get from sunlight is minimal, is 4000 IU by

> mouth adequate? Or is there a 50% loss in absorption?

> TOL, we must absorb more from minor exposure than we think

> maybe.

> Can we judge the dose by the tanning of the skin?

>

> Regards.

>

>

> [CR] " Recommendations for Vitamin D should be

> revised upward "

>

>

> > Just a news blurb from an upcoming JAMA article. I guess

> there is nothing new here, but I see that there is growing

> consensus that the levels of calcium are " secondary " to bone

> health.

> >

> > =-=-=-=-=-=-=-=-=-=-=

> >

> >

> http://www.forbes.com/lifestyle/health/feeds/hscout/2005/11/

> 08/hscout529005.html

> >

> > =-=-=-==-=-=-=-==--

> >

> > " The findings add " to the current opinion that

> recommendations for vitamin D intake should be adjusted

> upward, " said , a nutritional epidemiologist at

> the Tufts University Mayer Human Nutrition Research

> Center on Aging.

> > Current recommendations call for 300 to 600 International

> Units of vitamin D a day, with the amount increasing with

> age. " Quite a few people advocate as much as 1,000

> International Units a day, with 1,000 to 1,200 milligrams of

> calcium, " said.

> >

> > One of those advocating much higher levels of vitamin D

> intake is Dr. P. Heaney, an endocrinologist who holds

> the title of university professor at Creighton University,

> in Omaha, Neb.

> >

> > " I am concerned about the elderly and infirm, " Heaney

> said. " They don't make as much vitamin D as other people and

> they have a higher requirement for it. We need to consider

> giving everyone enough so that the vulnerable get as much as

> they need. I think we could do that without endangering

> people who get above-the-normal blood level range, but that

> is not a universal consensus. "

> >

> > Vitamin D is an unusual nutrient, Heaney noted, because

> people get very little of it from food. " My best estimate is

> that the body uses 4,000 International Units a day, " he

> said. " We get about a tenth of that by mouth. The other 90

> percent comes from the skin, created by exposure to

> sunlight. "

> >

> > And exposure to sunlight can vary widely, affected by not

> only the weather but also social influences, Heaney said.

> For example, vitamin D deficiency is common in Saudi Arabia,

> he said, because men and women cover most of their bodies

> with flowing robes.

> >

> > And there is still a lot to be learned about vitamin D,

> Heaney said. " Vitamin D is probably more important than most

> of us realized until recently, " he said. " But we have

> studied it in the context of vitamin deficiency. We have to

> do a better job of nailing down the optimum daily

> requirements. "

> >

> >

> >

> > =-=-==-=-==-=-=-

> >

> > T. pct35768@y...

> >

>

[Guest guest]

Hi JW:

I did a Google search a while back for vitamin D and found a credible

source which said that enough sunlight to get even the mildest skin

pigmentation gave a massive dose of D (IIRC 10,000 IU).

So skin coloration, if sun exposure is regular, is not necessary

nutrition-wise.

Rodney.

--- In , " jwwright " <jwwright@e...>

wrote:

>

> Here is says we use 4000 IU and get 90% from sunlight.

> Assuming what we get from sunlight is minimal, is 4000 IU by

> mouth adequate? Or is there a 50% loss in absorption?

> TOL, we must absorb more from minor exposure than we think

> maybe.

> Can we judge the dose by the tanning of the skin?

>

> Regards.

>

>

> [CR] " Recommendations for Vitamin D should be

> revised upward "

>

>

> > Just a news blurb from an upcoming JAMA article. I guess

> there is nothing new here, but I see that there is growing

> consensus that the levels of calcium are " secondary " to bone

> health.

> >

> > =-=-=-=-=-=-=-=-=-=-=

> >

> >

> http://www.forbes.com/lifestyle/health/feeds/hscout/2005/11/

> 08/hscout529005.html

> >

> > =-=-=-==-=-=-=-==--

> >

> > " The findings add " to the current opinion that

> recommendations for vitamin D intake should be adjusted

> upward, " said , a nutritional epidemiologist at

> the Tufts University Mayer Human Nutrition Research

> Center on Aging.

> > Current recommendations call for 300 to 600 International

> Units of vitamin D a day, with the amount increasing with

> age. " Quite a few people advocate as much as 1,000

> International Units a day, with 1,000 to 1,200 milligrams of

> calcium, " said.

> >

> > One of those advocating much higher levels of vitamin D

> intake is Dr. P. Heaney, an endocrinologist who holds

> the title of university professor at Creighton University,

> in Omaha, Neb.

> >

> > " I am concerned about the elderly and infirm, " Heaney

> said. " They don't make as much vitamin D as other people and

> they have a higher requirement for it. We need to consider

> giving everyone enough so that the vulnerable get as much as

> they need. I think we could do that without endangering

> people who get above-the-normal blood level range, but that

> is not a universal consensus. "

> >

> > Vitamin D is an unusual nutrient, Heaney noted, because

> people get very little of it from food. " My best estimate is

> that the body uses 4,000 International Units a day, " he

> said. " We get about a tenth of that by mouth. The other 90

> percent comes from the skin, created by exposure to

> sunlight. "

> >

> > And exposure to sunlight can vary widely, affected by not

> only the weather but also social influences, Heaney said.

> For example, vitamin D deficiency is common in Saudi Arabia,

> he said, because men and women cover most of their bodies

> with flowing robes.

> >

> > And there is still a lot to be learned about vitamin D,

> Heaney said. " Vitamin D is probably more important than most

> of us realized until recently, " he said. " But we have

> studied it in the context of vitamin deficiency. We have to

> do a better job of nailing down the optimum daily

> requirements. "

> >

> >

> >

> > =-=-==-=-==-=-=-

> >

> > T. pct35768@y...

> >

>

[Guest guest]

Hi JW:

I do not recall how much of the body needed to be exposed to get that

10,000 IU.

Rodney.

> >

> > Here is says we use 4000 IU and get 90% from sunlight.

> > Assuming what we get from sunlight is minimal, is 4000 IU by

> > mouth adequate? Or is there a 50% loss in absorption?

> > TOL, we must absorb more from minor exposure than we think

> > maybe.

> > Can we judge the dose by the tanning of the skin?

> >

> > Regards.

> >

> >

> > [CR] " Recommendations for Vitamin D should be

> > revised upward "

> >

> >

> > > Just a news blurb from an upcoming JAMA article. I guess

> > there is nothing new here, but I see that there is growing

> > consensus that the levels of calcium are " secondary " to bone

> > health.

> > >

> > > =-=-=-=-=-=-=-=-=-=-=

> > >

> > >

> > http://www.forbes.com/lifestyle/health/feeds/hscout/2005/11/

> > 08/hscout529005.html

> > >

> > > =-=-=-==-=-=-=-==--

> > >

> > > " The findings add " to the current opinion that

> > recommendations for vitamin D intake should be adjusted

> > upward, " said , a nutritional epidemiologist at

> > the Tufts University Mayer Human Nutrition Research

> > Center on Aging.

> > > Current recommendations call for 300 to 600 International

> > Units of vitamin D a day, with the amount increasing with

> > age. " Quite a few people advocate as much as 1,000

> > International Units a day, with 1,000 to 1,200 milligrams of

> > calcium, " said.

> > >

> > > One of those advocating much higher levels of vitamin D

> > intake is Dr. P. Heaney, an endocrinologist who holds

> > the title of university professor at Creighton University,

> > in Omaha, Neb.

> > >

> > > " I am concerned about the elderly and infirm, " Heaney

> > said. " They don't make as much vitamin D as other people and

> > they have a higher requirement for it. We need to consider

> > giving everyone enough so that the vulnerable get as much as

> > they need. I think we could do that without endangering

> > people who get above-the-normal blood level range, but that

> > is not a universal consensus. "

> > >

> > > Vitamin D is an unusual nutrient, Heaney noted, because

> > people get very little of it from food. " My best estimate is

> > that the body uses 4,000 International Units a day, " he

> > said. " We get about a tenth of that by mouth. The other 90

> > percent comes from the skin, created by exposure to

> > sunlight. "

> > >

> > > And exposure to sunlight can vary widely, affected by not

> > only the weather but also social influences, Heaney said.

> > For example, vitamin D deficiency is common in Saudi Arabia,

> > he said, because men and women cover most of their bodies

> > with flowing robes.

> > >

> > > And there is still a lot to be learned about vitamin D,

> > Heaney said. " Vitamin D is probably more important than most

> > of us realized until recently, " he said. " But we have

> > studied it in the context of vitamin deficiency. We have to

> > do a better job of nailing down the optimum daily

> > requirements. "

> > >

> > >

> > >

> > > =-=-==-=-==-=-=-

> > >

> > > T. pct35768@y...

> > >

> >

>

[Guest guest]

Hi JW:

I do not recall how much of the body needed to be exposed to get that

10,000 IU.

Rodney.

> >

> > Here is says we use 4000 IU and get 90% from sunlight.

> > Assuming what we get from sunlight is minimal, is 4000 IU by

> > mouth adequate? Or is there a 50% loss in absorption?

> > TOL, we must absorb more from minor exposure than we think

> > maybe.

> > Can we judge the dose by the tanning of the skin?

> >

> > Regards.

> >

> >

> > [CR] " Recommendations for Vitamin D should be

> > revised upward "

> >

> >

> > > Just a news blurb from an upcoming JAMA article. I guess

> > there is nothing new here, but I see that there is growing

> > consensus that the levels of calcium are " secondary " to bone

> > health.

> > >

> > > =-=-=-=-=-=-=-=-=-=-=

> > >

> > >

> > http://www.forbes.com/lifestyle/health/feeds/hscout/2005/11/

> > 08/hscout529005.html

> > >

> > > =-=-=-==-=-=-=-==--

> > >

> > > " The findings add " to the current opinion that

> > recommendations for vitamin D intake should be adjusted

> > upward, " said , a nutritional epidemiologist at

> > the Tufts University Mayer Human Nutrition Research

> > Center on Aging.

> > > Current recommendations call for 300 to 600 International

> > Units of vitamin D a day, with the amount increasing with

> > age. " Quite a few people advocate as much as 1,000

> > International Units a day, with 1,000 to 1,200 milligrams of

> > calcium, " said.

> > >

> > > One of those advocating much higher levels of vitamin D

> > intake is Dr. P. Heaney, an endocrinologist who holds

> > the title of university professor at Creighton University,

> > in Omaha, Neb.

> > >

> > > " I am concerned about the elderly and infirm, " Heaney

> > said. " They don't make as much vitamin D as other people and

> > they have a higher requirement for it. We need to consider

> > giving everyone enough so that the vulnerable get as much as

> > they need. I think we could do that without endangering

> > people who get above-the-normal blood level range, but that

> > is not a universal consensus. "

> > >

> > > Vitamin D is an unusual nutrient, Heaney noted, because

> > people get very little of it from food. " My best estimate is

> > that the body uses 4,000 International Units a day, " he

> > said. " We get about a tenth of that by mouth. The other 90

> > percent comes from the skin, created by exposure to

> > sunlight. "

> > >

> > > And exposure to sunlight can vary widely, affected by not

> > only the weather but also social influences, Heaney said.

> > For example, vitamin D deficiency is common in Saudi Arabia,

> > he said, because men and women cover most of their bodies

> > with flowing robes.

> > >

> > > And there is still a lot to be learned about vitamin D,

> > Heaney said. " Vitamin D is probably more important than most

> > of us realized until recently, " he said. " But we have

> > studied it in the context of vitamin deficiency. We have to

> > do a better job of nailing down the optimum daily

> > requirements. "

> > >

> > >

> > >

> > > =-=-==-=-==-=-=-

> > >

> > > T. pct35768@y...

> > >

> >

>

[Guest guest]

Hi JW:

Good question. How much can the body store? And how long do those

stores last with an inadequate intake? Dunno.

But there have been so many new studies appear in the last two years

indicating that vitamin D prevents or cures almost as many

afflications as statins; and with new studies saying the actual safe

daily upper limit is perhaps five times higher than the current

official 'USL' (which I believe is 2000 IU), it seems to me that

taking a higher amount daily may be advisable, and up to 2000 IU is

certainly safe.

As for me, Fitday tells me that I get only just the RDA from food.

And I only get that much because of the fish I eat. Until now I have

been taking supplements amounting to about 270 IU per day. But as of

today(!!!) - bought the extra supplements yesterday - I will be

taking 1000 a day in addition to what I get from food.

In the north there is no problem in the summer months. But in winter

the sun is at a low angle to the horizon and gets filtered through

much more stuff on its way to me. So it is doubtful I get much

vitamin D from sunlight in the winter. Besides I don't sunbathe as

much here in February.

Some scientists believe the higher colon cancer rate in the northern

US, compared with the rate in the southern US may be because of

inadquate D from sunlight in the north.

Rodney.

[PS: I see you used the 'possibility' usage of the word 'may' in the

first sentance of your post to Al, LOL. Good one!]

> >

> > Here is says we use 4000 IU and get 90% from sunlight.

> > Assuming what we get from sunlight is minimal, is 4000 IU by

> > mouth adequate? Or is there a 50% loss in absorption?

> > TOL, we must absorb more from minor exposure than we think

> > maybe.

> > Can we judge the dose by the tanning of the skin?

> >

> > Regards.

> >

>

[Guest guest]

Hi JW:

Good question. How much can the body store? And how long do those

stores last with an inadequate intake? Dunno.

But there have been so many new studies appear in the last two years

indicating that vitamin D prevents or cures almost as many

afflications as statins; and with new studies saying the actual safe

daily upper limit is perhaps five times higher than the current

official 'USL' (which I believe is 2000 IU), it seems to me that

taking a higher amount daily may be advisable, and up to 2000 IU is

certainly safe.

As for me, Fitday tells me that I get only just the RDA from food.

And I only get that much because of the fish I eat. Until now I have

been taking supplements amounting to about 270 IU per day. But as of

today(!!!) - bought the extra supplements yesterday - I will be

taking 1000 a day in addition to what I get from food.

In the north there is no problem in the summer months. But in winter

the sun is at a low angle to the horizon and gets filtered through

much more stuff on its way to me. So it is doubtful I get much

vitamin D from sunlight in the winter. Besides I don't sunbathe as

much here in February.

Some scientists believe the higher colon cancer rate in the northern

US, compared with the rate in the southern US may be because of

inadquate D from sunlight in the north.

Rodney.

[PS: I see you used the 'possibility' usage of the word 'may' in the

first sentance of your post to Al, LOL. Good one!]

> >

> > Here is says we use 4000 IU and get 90% from sunlight.

> > Assuming what we get from sunlight is minimal, is 4000 IU by

> > mouth adequate? Or is there a 50% loss in absorption?

> > TOL, we must absorb more from minor exposure than we think

> > maybe.

> > Can we judge the dose by the tanning of the skin?

> >

> > Regards.

> >

>