Guest guest Posted January 22, 2003 Report Share Posted January 22, 2003 Interesting new study: Vitamin A raises risk of bone injuries Study finds supplement linked to increase in fractures ASSOCIATED PRESS Jan. 22 - Taking vitamin A supplements can weaken the bones and increase the risk of fractures up to seven times, according to a large Swedish study. Take our interactive quizzes Sign up for our free health e-newsletter . eDiets Diet Center . Shop at B & N.com . Auctions at uBid . Yellow Pages . lavalife.com Where singles click . MSN Broadband 'Unless there is a known medical reason like certain diseases of the eye, .... people should not be taking vitamin A supplements.' - DR. DONALD LOURIA University of Medicine and Dentistry of New Jersey THE RESEARCH, conducted on men, confirms three earlier studies in women showing that high intake of vitamin A raises the risk of broken hips and weak bones. The latest study is the first to measure levels of the vitamin in blood, rather than just asking about diet and supplement use. The three-decade study and other evidence suggest that daily vitamin A consumption of more than 1.5 milligrams can be dangerous, and that people should not take vitamin A supplements. Current dietary recommendations call for only 0.7 mg of vitamin A for women and 0.9 mg for men a day. That is easily supplied by a healthy diet. But many popular multivitamins contain 0.75 mg to 1.5 mg of vitamin A, generally listed on labels as 2,500 international units and 5,000 IUs, respectively. " Vitamin A is potentially harmful, " said Dr. Donald Louria, chairman emeritus of preventive medicine at the University of Medicine and Dentistry of New Jersey in Newark, N.J. " Unless there is a known medical reason like certain diseases of the eye, ... people should not be taking vitamin A supplements. " The study by doctors at University Hospital in Uppsala was reported in Thursday's New England Journal of Medicine. It involved 2,322 men. INTERFERES WITH BONE CELLS Vitamin A is known as an antioxidant. Antioxidants are believed to reduce the risk of cancer and heart disease. Government studies show one-third to one-half of Americans take vitamin A or multivitamins containing it. Vitamin A can interfere with cells that produce new bone, stimulate cells that break down old bone and interfere with vitamin D, which helps the body maintain normal calcium levels. In the study, about one-fifth, or roughly 465 of the men, were found to be at risk because they had the highest levels of vitamin A. The men were about 2½ times more likely to break a hip and 65 percent more likely to suffer any fracture than those with lower levels of the vitamin in their blood. Those in the 99th percentile were about seven times more likely to break a bone. Louria said that people should not take fish oil supplements or eat liver more than once a week, but that multivitamins containing 0.1 mg or less of vitamin A are fine for people eating a healthy diet. Advertisement Large amounts of vitamin A are found in beef liver and fish liver oils; smaller amounts are in egg yolks, butter and cream. Milk and some cereals are fortified with vitamin A and, per serving, provide about 10 percent of daily needs. And substances in dark green, leafy vegetables and yellow vegetables and fruits are converted to vitamin A in the body. The study had some shortcomings: Blood levels of vitamin A were measured only once, and the participants' reports of diet and supplement use 20 years later did not match well with their earlier vitamin A blood levels. © 2003 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 23, 2003 Report Share Posted January 23, 2003 Dear Group, Does anyone really believe this? Frank Gettingwell , " Ken Woody " <kenwoody@a...> wrote: > Interesting new study: > > Vitamin A raises risk of bone injuries > > Study finds supplement linked to increase in fractures > > > ASSOCIATED PRESS > > Jan. 22 - Taking vitamin A supplements can weaken the bones and increase the risk of fractures up to seven times, according to a large Swedish study. > > > > > > Take our interactive quizzes > Sign up for our free health e-newsletter . eDiets Diet Center > . Shop at B & N.com > . Auctions at uBid > . Yellow Pages > . lavalife.com Where singles click > . MSN Broadband > > > > > > > > > > 'Unless there is a known medical reason like certain diseases of the eye, ... people should not be taking vitamin A supplements.' > - DR. DONALD LOURIA > University of Medicine and Dentistry of New Jersey THE RESEARCH, conducted on men, confirms three earlier studies in women showing that high intake of vitamin A raises the risk of broken hips and weak bones. The latest study is the first to measure levels of the vitamin in blood, rather than just asking about diet and supplement use. > The three-decade study and other evidence suggest that daily vitamin A consumption of more than 1.5 milligrams can be dangerous, and that people should not take vitamin A supplements. > Current dietary recommendations call for only 0.7 mg of vitamin A for women and 0.9 mg for men a day. That is easily supplied by a healthy diet. But many popular multivitamins contain 0.75 mg to 1.5 mg of vitamin A, generally listed on labels as 2,500 international units and 5,000 IUs, respectively. > > > > " Vitamin A is potentially harmful, " said Dr. Donald Louria, chairman emeritus of preventive medicine at the University of Medicine and Dentistry of New Jersey in Newark, N.J. " Unless there is a known medical reason like certain diseases of the eye, ... people should not be taking vitamin A supplements. " > The study by doctors at University Hospital in Uppsala was reported in Thursday's New England Journal of Medicine. It involved 2,322 men. > > INTERFERES WITH BONE CELLS > Vitamin A is known as an antioxidant. Antioxidants are believed to reduce the risk of cancer and heart disease. Government studies show one-third to one-half of Americans take vitamin A or multivitamins containing it. > Vitamin A can interfere with cells that produce new bone, stimulate cells that break down old bone and interfere with vitamin D, which helps the body maintain normal calcium levels. > > In the study, about one-fifth, or roughly 465 of the men, were found to be at risk because they had the highest levels of vitamin A. The men were about 2½ times more likely to break a hip and 65 percent more likely to suffer any fracture than those with lower levels of the vitamin in their blood. > Those in the 99th percentile were about seven times more likely to break a bone. > Louria said that people should not take fish oil supplements or eat liver more than once a week, but that multivitamins containing 0.1 mg or less of vitamin A are fine for people eating a healthy diet. > Advertisement > > > > > Large amounts of vitamin A are found in beef liver and fish liver oils; smaller amounts are in egg yolks, butter and cream. Milk and some cereals are fortified with vitamin A and, per serving, provide about 10 percent of daily needs. And substances in dark green, leafy vegetables and yellow vegetables and fruits are converted to vitamin A in the body. > The study had some shortcomings: Blood levels of vitamin A were measured only once, and the participants' reports of diet and supplement use 20 years later did not match well with their earlier vitamin A blood levels. > > © 2003 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 23, 2003 Report Share Posted January 23, 2003 I don't believe it for a second. Note the last sentence: " The study had some shortcomings: Blood levels of vitamin A were measured only once, and the participants' reports of diet and supplement use 20 years later did not match well with their earlier vitamin A blood levels. " Sounds like some pretty serious shortcomings to me. Ken - califpacific <califpacific Gettingwell Wednesday, January 22, 2003 10:12 PM Re: Vit A Dangerous Dear Group, Does anyone really believe this? Frank Gettingwell , " Ken Woody " <kenwoody@a...> wrote: > Interesting new study: > > Vitamin A raises risk of bone injuries > > Study finds supplement linked to increase in fractures > > > ASSOCIATED PRESS > > Jan. 22 - Taking vitamin A supplements can weaken the bones and increase the risk of fractures up to seven times, according to a large Swedish study. > > > > > > Take our interactive quizzes > Sign up for our free health e-newsletter > > > > > > > . eDiets Diet Center > . Shop at B & N.com > . Auctions at uBid > . Yellow Pages > . lavalife.com Where singles click > . MSN Broadband > > > > > > > > > > > > > > > > > 'Unless there is a known medical reason like certain diseases of the eye, ... people should not be taking vitamin A supplements.' > - DR. DONALD LOURIA > University of Medicine and Dentistry of New Jersey THE RESEARCH, conducted on men, confirms three earlier studies in women showing that high intake of vitamin A raises the risk of broken hips and weak bones. The latest study is the first to measure levels of the vitamin in blood, rather than just asking about diet and supplement use. > The three-decade study and other evidence suggest that daily vitamin A consumption of more than 1.5 milligrams can be dangerous, and that people should not take vitamin A supplements. > Current dietary recommendations call for only 0.7 mg of vitamin A for women and 0.9 mg for men a day. That is easily supplied by a healthy diet. But many popular multivitamins contain 0.75 mg to 1.5 mg of vitamin A, generally listed on labels as 2,500 international units and 5,000 IUs, respectively. > > > > " Vitamin A is potentially harmful, " said Dr. Donald Louria, chairman emeritus of preventive medicine at the University of Medicine and Dentistry of New Jersey in Newark, N.J. " Unless there is a known medical reason like certain diseases of the eye, ... people should not be taking vitamin A supplements. " > The study by doctors at University Hospital in Uppsala was reported in Thursday's New England Journal of Medicine. It involved 2,322 men. > > INTERFERES WITH BONE CELLS > Vitamin A is known as an antioxidant. Antioxidants are believed to reduce the risk of cancer and heart disease. Government studies show one-third to one-half of Americans take vitamin A or multivitamins containing it. > Vitamin A can interfere with cells that produce new bone, stimulate cells that break down old bone and interfere with vitamin D, which helps the body maintain normal calcium levels. > > In the study, about one-fifth, or roughly 465 of the men, were found to be at risk because they had the highest levels of vitamin A. The men were about 2½ times more likely to break a hip and 65 percent more likely to suffer any fracture than those with lower levels of the vitamin in their blood. > Those in the 99th percentile were about seven times more likely to break a bone. > Louria said that people should not take fish oil supplements or eat liver more than once a week, but that multivitamins containing 0.1 mg or less of vitamin A are fine for people eating a healthy diet. > Advertisement > > > > > Large amounts of vitamin A are found in beef liver and fish liver oils; smaller amounts are in egg yolks, butter and cream. Milk and some cereals are fortified with vitamin A and, per serving, provide about 10 percent of daily needs. And substances in dark green, leafy vegetables and yellow vegetables and fruits are converted to vitamin A in the body. > The study had some shortcomings: Blood levels of vitamin A were measured only once, and the participants' reports of diet and supplement use 20 years later did not match well with their earlier vitamin A blood levels. > > © 2003 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 23, 2003 Report Share Posted January 23, 2003 Dear Group, Well it is only 11:00 am locally and I have already seen this junk article 3 times, on 3 different TV stations. My, how big money can make information available, even if it is wrong. Too bad the truth can lie dormant or hidden for decades. Frank Gettingwell , " califpacific <califpacific> " <califpacific> wrote: > Dear Group, > > Does anyone really believe this? > > Frank > > > Gettingwell , " Ken Woody " <kenwoody@a...> wrote: > > Interesting new study: > > > > Vitamin A raises risk of bone injuries > > > > Study finds supplement linked to increase in fractures > > > > > > ASSOCIATED PRESS > > > > Jan. 22 - Taking vitamin A supplements can weaken the bones > and increase the risk of fractures up to seven times, according to a > large Swedish study. > > > > > > > > > > > > Take our interactive quizzes > > Sign up for our free health e-newsletter > > > > > > > > > > > > > > . eDiets Diet Center > > . Shop at B & N.com > > . Auctions at uBid > > . Yellow Pages > > . lavalife.com Where singles click > > . MSN Broadband > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > 'Unless there is a known medical reason like certain diseases > of the eye, ... people should not be taking vitamin A supplements.' > > - DR. DONALD LOURIA > > University of Medicine and Dentistry of New Jersey > THE RESEARCH, conducted on men, confirms three earlier studies in > women showing that high intake of vitamin A raises the risk of broken > hips and weak bones. The latest study is the first to measure levels > of the vitamin in blood, rather than just asking about diet and > supplement use. > > The three-decade study and other evidence suggest that > daily vitamin A consumption of more than 1.5 milligrams can be > dangerous, and that people should not take vitamin A supplements. > > Current dietary recommendations call for only 0.7 mg > of vitamin A for women and 0.9 mg for men a day. That is easily > supplied by a healthy diet. But many popular multivitamins contain > 0.75 mg to 1.5 mg of vitamin A, generally listed on labels as 2,500 > international units and 5,000 IUs, respectively. > > > > > > > > " Vitamin A is potentially harmful, " said Dr. Donald > Louria, chairman emeritus of preventive medicine at the University of > Medicine and Dentistry of New Jersey in Newark, N.J. " Unless there is > a known medical reason like certain diseases of the eye, ... people > should not be taking vitamin A supplements. " > > The study by doctors at University Hospital in Uppsala > was reported in Thursday's New England Journal of Medicine. It > involved 2,322 men. > > > > INTERFERES WITH BONE CELLS > > Vitamin A is known as an antioxidant. Antioxidants are > believed to reduce the risk of cancer and heart disease. Government > studies show one-third to one-half of Americans take vitamin A or > multivitamins containing it. > > Vitamin A can interfere with cells that produce new > bone, stimulate cells that break down old bone and interfere with > vitamin D, which helps the body maintain normal calcium levels. > > > > In the study, about one-fifth, or roughly 465 of the > men, were found to be at risk because they had the highest levels of > vitamin A. The men were about 2½ times more likely to break a hip and > 65 percent more likely to suffer any fracture than those with lower > levels of the vitamin in their blood. > > Those in the 99th percentile were about seven times > more likely to break a bone. > > Louria said that people should not take fish oil > supplements or eat liver more than once a week, but that > multivitamins containing 0.1 mg or less of vitamin A are fine for > people eating a healthy diet. > > Advertisement > > > > > > > > > > Large amounts of vitamin A are found in beef liver and > fish liver oils; smaller amounts are in egg yolks, butter and cream. > Milk and some cereals are fortified with vitamin A and, per serving, > provide about 10 percent of daily needs. And substances in dark > green, leafy vegetables and yellow vegetables and fruits are > converted to vitamin A in the body. > > The study had some shortcomings: Blood levels of > vitamin A were measured only once, and the participants' reports of > diet and supplement use 20 years later did not match well with their > earlier vitamin A blood levels. > > > > © 2003 Associated Press. All rights reserved. This > material may not be published, broadcast, rewritten or redistributed. > > > > > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 23, 2003 Report Share Posted January 23, 2003 I believe the part about the study having shortcomings. I also noted that the report came from associated press, which sure makes it all the more suspect to me. Alobar - <califpacific Wednesday, January 22, 2003 10:12 PM Re: Vit A Dangerous Dear Group, Does anyone really believe this? Frank > Vitamin A raises risk of bone injuries >> The study had some shortcomings: >> Blood levels of vitamin A were measured only once, >> and the participants' reports of diet and supplement use >> 20 years later did not match well with their earlier >> vitamin A blood levels. > >> © 2003 Associated Press. Quote Link to comment Share on other sites More sharing options...
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