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Science Forum Index » Medicine - Nutrition Forum » study shows that Vitamin D prevents cancer
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| bigvince |
 Posted: Mon Jun 11, 2007 8:15 am |
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Guest
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A new study confirms that Vitamin d reduces cancer; From
Medical News Today
"Vitamin D Reduces Cancer Risk"
6/9/07
"Most Americans and others are not taking enough vitamin D, a fact
that
may put them at significant risk for developing cancer, according to
a
landmark study conducted by Creighton University School of Medicine.
The four-year, randomized study followed 1,179 healthy,
postmenopausal
women from rural eastern Nebraska. Participants taking calcium, as
well as a quantity of vitamin D3 nearly three times the U.S.
government's Recommended Daily Amount (RDA) for middle-age adults,
showed a dramatic 60 percent or greater reduction in cancer risk than
women who did not get the vitamin.
The results of the study, conducted between 2000 and 2005, were
reported in the June 8 online edition of the American Journal of
Clinical Nutrition.
"The findings are very exciting. They confirm what a number of
vitamin
D proponents have suspected for some time but that, until now, have
not been substantiated through clinical trial," said principal
investigator Joan Lappe, Ph.D., R.N., Creighton professor of medicine
and holder of the Criss/Beirne Endowed Chair in the School of
Nursing.
"Vitamin D is a critical tool in fighting cancer as well as many
other
diseases."
It is interesting to note that the most natural source of Vitamin D is
sunlight. If indeed this study is confirmed is it not time for the
medical community to revise there advice in regards to sun exposure.
The article notes that the study was funded by the NIH
Read full story http://www.medicalnewstoday.com/medicalnews.php?newsid=73654 |
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| WaCoder |
| Posted: Wed Jun 13, 2007 1:15 pm |
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Guest
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bigvince wrote:
Quote: A new study confirms that Vitamin d reduces cancer; From
Medical News Today
"Vitamin D Reduces Cancer Risk"
6/9/07
"Most Americans and others are not taking enough vitamin D
snip
Nobody needs to take Vitamin D. All they need to do is get some sunshine
for 5-10 minutes a day without sunscreen whenever they can to build up
their Vitamin D stores in their bodies, and that should carry them
through the winter months when there isn't quite enough sun for their
bodies to make it themselves.
This is the one vitamin we don't have to buy (hallelujah!). |
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| bigvince |
| Posted: Wed Jun 13, 2007 1:41 pm |
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Guest
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On Jun 13, 2:15 pm, WaCoder <tboyli...@comcast.net> wrote:
Quote: bigvince wrote:
A new study confirms that Vitamin d reduces cancer; From
Medical News Today
"Vitamin D Reduces Cancer Risk"
6/9/07
"Most Americans and others are not taking enough vitamin D
snip
Nobody needs to take Vitamin D. All they need to do is get some sunshine
for 5-10 minutes a day without sunscreen whenever they can to build up
their Vitamin D stores in their bodies, and that should carry them
through the winter months when there isn't quite enough sun for their
bodies to make it themselves.
This is the one vitamin we don't have to buy (hallelujah!).
Much better to make sure you have an optimal amount. What you suggest
is probably not adequate. Blood test can determine what you have in
your system. or you can listen to the advice
of
Quote: From " Sweeping cancer edict: take vitamin D daily "; Globe and
Mail, 7/8/07 "
http://www.theglobeandmail.com/servlet/story/RTGAM.20070608.wvitaminD...
TORONTO - "The Canadian Cancer Society plans to announce Friday that
all adults should start taking vitamin D, coinciding with the release
of a groundbreaking U.S. study indicating the supplement cuts the
risk
of cancer by an astounding 60 per cent.
The move is believed to be the first time a major public-health
organization has endorsed daily use of the sunshine vitamin as a
cancer-prevention therapy for an entire population.
It follows a flurry of research suggesting the low-cost vitamin
confers a high degree of protection against a wide variety of
cancers.
There are also striking study results suggesting that people who
develop the disease often have low blood levels of vitamin D.
Although it is not known how many of the approximately 160,000 cancer
cases diagnosed annually in Canada might be avoided by regular
popping
of a vitamin D pill, the cancer society said these findings are so
compelling it felt it had to start urging people to act on
them......full story at link . The guestion is why has the
American Cancer Society not followed suit " |
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| Matti Narkia |
| Posted: Wed Jun 13, 2007 2:31 pm |
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Guest
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On Wed, 13 Jun 2007 10:15:13 -0800, WaCoder <tboylinux@comcast.net>
wrote:
Quote: bigvince wrote:
A new study confirms that Vitamin d reduces cancer; From
Medical News Today
"Vitamin D Reduces Cancer Risk"
6/9/07
"Most Americans and others are not taking enough vitamin D
snip
Nobody needs to take Vitamin D. All they need to do is get some sunshine
for 5-10 minutes a day without sunscreen whenever they can to build up
their Vitamin D stores in their bodies, and that should carry them
through the winter months when there isn't quite enough sun for their
bodies to make it themselves.
This is the one vitamin we don't have to buy (hallelujah!).
Really? I strongly disagree. Although some people living in tropics or
subrtropic may be lucky enough to have all year supply of
UVB-radiation, most of us are not so fortunate, nut need some
supplements in the winter. See for example the articles:
Grant WB, Garland CF, Gorham ED.
An estimate of cancer mortality rate reductions in Europe and the US
with 1,000 IU of oral vitamin D per day.
Recent Results Cancer Res. 2007;174:225-34. Review.
PMID: 17302200 [PubMed - indexed for MEDLINE]
<http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=17302200>
"Solar ultraviolet B (UVB) irradiance and/or vitamin D have
been found inversely correlated with incidence, mortality,
and/or survival rates for breast, colorectal, ovarian, and
prostate cancer and Hodgkin's and non-Hodgkin's lymphoma.
Evidence is emerging that more than 17 different types of
cancer are likely to be vitamin D-sensitive. A recent meta-
analysis concluded that 1,000 IU of oral vitamin D per day is
associated with a 50% reduction in colorectal cancer
incidence. Using this value, as well as the findings in a
multifactorial ecologic study of cancer mortality rates in
the US, estimates for reductions in risk of vitamin D-
sensitive cancer mortality rates were made for 1,000 IU/day.
These estimates, along with annual average serum 25-
hydroxyvitamin D levels, were used to estimate the reduction
in cancer mortality rates in several Western European and
North American countries that would result from intake of
1,000 IU/day of vitamin D. It was estimated that reductions
could be 7% for males and 9% for females in the US and 14%
for males and 20% for females in Western European countries
below 59 degrees. It is proposed that increased fortification
of food and increased availability of supplements could help
increase vitamin D intake and could augment small increases
in production of vitamin D from solar UVB irradiance.
Providing 1,000 IU of vitamin D per day for all adult
Americans would cost about $1 billion; the expected benefits
for cancer would be in the range of $16-25 billion in
addition to other health benefits of vitamin D."
Grant WB, Garland CF, Holick MF.
Comparisons of estimated economic burdens due to insufficient solar
ultraviolet irradiance and vitamin D and excess solar UV irradiance
for the United States.
Photochem Photobiol. 2005 Nov-Dec;81(6):1276-86.
PMID: 16159309 [PubMed - indexed for MEDLINE]
<http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=abstractplus&db=pubmed&cmd=Retrieve&dopt=abstractplus&list_uids=16159309>
"Vitamin D sufficiency is required for optimal health, and
solar ultraviolet B (UVB) irradiance is an important source
of vitamin D. UVB and/or vitamin D have been found in
observational studies to be associated with reduced risk for
over a dozen forms of cancer, multiple sclerosis,
osteoporotic fractures, and several other diseases. On the
other hand, excess UV irradiance is associated with adverse
health outcomes such as cataracts, melanoma, and nonmelanoma
skin cancer. Ecologic analyses are used to estimate the
fraction of cancer mortality, multiple sclerosis prevalence,
and cataract formation that can be prevented or delayed.
Estimates from the literature are used for other diseases
attributed to excess UV irradiation, additional cancer
estimates, and osteoporotic fractures. These results are used
to estimate the economic burdens of insufficient UVB
irradiation and vitamin D insufficiency as well as excess UV
irradiation in the United States for these diseases and
conditions. We estimate that 50,000-63,000 individuals in the
United States and 19,000-25,000 in the UK die prematurely
from cancer annually due to insufficient vitamin D. The U.S.
economic burden due to vitamin D insufficiency from
inadequate exposure to solar UVB irradiance, diet, and
supplements was estimated at $40-56 billion in 2004, whereas
the economic burden for excess UV irradiance was estimated at
$6-7 billion. These results suggest that increased vitamin D
through UVB irradiance, fortification of food, and
supplementation could reduce the health care burden in the
United States, UK, and elsewhere. Further research is
required to confirm these estimates."
Giovannucci E, Liu Y, Rimm EB, Hollis BW, Fuchs CS, Stampfer MJ,
Willett WC.
Prospective study of predictors of vitamin D status and cancer
incidence and mortality in men.
JNCI Journal of the National Cancer Institute 2006 98(7):451-459;
doi:10.1093/jnci/djj101
http://jnci.oxfordjournals.org/cgi/content/full/98/7/451>
Cedric F. Garland, Frank C. Garland, Edward D. Gorham, Martin Lipkin,
Harold Newmark, Sharif B. Mohr, and Michael F. Holick
The Role of Vitamin D in Cancer Prevention
AJPH published December 27, 2005, 10.2105/AJPH.2004.045260
<http://www.ajph.org/cgi/content/abstract/AJPH.2004.045260v1>
Hypponen E, Laara E, Reunanen A, Jarvelin MR, Virtanen SM.
Intake of vitamin D and risk of type 1 diabetes: a birth-cohort study.
Lancet. 2001 Nov 3;358(9292):1500-3.
PMID: 11705562 [PubMed - indexed for MEDLINE]
DOI:10.1016/S0140-6736(01)06580-1
<http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11705562&dopt=Abstract>
<http://www.thelancet.com/journals/lancet/article/PIIS0140673601065801/fulltext>
"BACKGROUND: Dietary vitamin D supplementation is associated
with reduced risk of type 1 diabetes in animals. Our aim was
to ascertain whether or not vitamin D supplementation or
deficiency in infancy could affect development of type 1
diabetes. METHODS: A birth-cohort study was done, in which
all pregnant women (n=12055) in Oulu and Lapland, northern
Finland, who were due to give birth in 1966 were enrolled.
Data was collected in the first year of life about frequency
and dose of vitamin D supplementation and presence of
suspected rickets. Our primary outcome measure was diagnosis
of type 1 diabetes by end of December, 1997. FINDINGS: 12058
of 12231 represented live births, and 10821 (91% of those
alive) children were followed-up at age 1 year. Of the 10366
children included in analyses, 81 were diagnosed with
diabetes during the study. Vitamin D supplementation was
associated with a decreased frequency of type 1 diabetes when
adjusted for neonatal, anthropometric, and social
characteristics (rate ratio [RR] for regular vs no
supplementation 0.12, 95% CI 0.03-0.51, and irregular vs no
supplementation 0.16, 0.04-0.74. Children who regularly took
the recommended dose of vitamin D (2000 IU daily) had a RR of
0.22 (0.05-0.89) compared with those who regularly received
less than the recommended amount. Children suspected of
having rickets during the first year of life had a RR of 3.0
(1.0-9.0) compared with those without such a suspicion.
INTERPRETATION: Dietary vitamin D supplementation is
associated with reduced risk of type 1 diabetes. Ensuring
adequate vitamin D supplementation for infants could help to
reverse the increasing trend in the incidence of type 1
diabetes."
--
Matti Narkia |
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