Guest guest Posted March 28, 2005 Report Share Posted March 28, 2005 We frequently hear advice about avoiding red meat and eggs because of cholesterol, etc., etc. However, about the only sources of Vitamin B12 are non-vegetarian. http://www.nlm.nih.gov/medlineplus/ency/article/002403.htm " Food Sources: Vitamin B-12 is found in eggs, meat, poultry, shellfish, milk, and milk products. " Nutritional software like DWIDP can help to keep track of Vitamin B12. 100 grams (180 kcal) of beef eye of round have 108% of the RDA. By comparison, 100 grams (165 kcal) of chicken breast have only 16% of the RDA of B12. Red meats provide a way of meeting your B12 requirements with as few calories as possible. The quest for Optimum Nutrition continues. Tony --- In , " mikesheldrick " <mike@s...> wrote: > > New study supported by USDA's ARS. I couldn't find it yet. Assume it > will be soon published. Here's the pewaa release: > > http://www.ars.usda.gov/News/docs.htm?docid=1261 > > Fight Osteoporosis: Bone Up on B12 > By lie n Bliss > March 28, 2005 > Women are about four times more likely than men to develop > osteoporosis, or weak, porous bones. But a new study links vitamin > B12 deficiency with low bone mineral density in men, and confirms > similar, previously reported findings in women. > > Researchers funded by the Agricultural Research Service (ARS) > reported the findings in the Journal of Bone and Mineral Research. > The study was led by epidemiologist Tucker with the Jean > Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts > University in Boston, Mass. Tucker directs the HNRCA's Dietary > Assessment and Epidemiology Research Program. > > While vitamin B12 deficiency has been linked with low levels of > markers of bone formation, the mechanism behind the relationship is > not known. > > The scientists examined the relationship between vitamin B12 blood > levels and indicators of bone health measured in 2,576 men and > women, aged 30 to 87, participating in the Framingham Osteoporosis > Study. They found that those with vitamin B12 levels lower than 148 > picomoles per liter (pM/L) were at greater risk of osteoporosis than > those with higher levels. Plasma B12 levels below 185 pM/L are > considered " very low, " according to some experts. > > The study found that those with vitamin B12 concentrations below 148 > pM/L had significantly lower average bone mineral density--at the > hip in men, and at the spine in women--than those with > concentrations above. > > The range of symptoms of B-12 deficiency includes anemia, balance > disturbances and cognitive decline. Osteoporosis usually progresses > with no outward effect until a fracture occurs. > > The recommended dietary allowance for vitamin B12 is 2.4 micrograms > per day for both men and women. Low stomach acid and aging can lower > the ability to absorb the vitamin. Those over age 50 are encouraged > to consume fortified foods or supplements containing B12. > > This study suggests adequate vitamin B12 intake is important for > maintaining bone mineral density. Animal protein foods, such as > fish, liver, beef, pork, milk and cheese are good sources of vitamin > B12. > > ARS is the U.S. Department of Agriculture's chief scientific > research agency > > > Mike Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 28, 2005 Report Share Posted March 28, 2005 What I don't see in the article is a conclusion. Do we up our intake? To what? Do we test it? These data were probably gotten after the fact (from people with disease). Doesn't mean I need to eat more beef, etc. Does my MV have enough? Regards. > > > > New study supported by USDA's ARS. I couldn't find it yet. Assume > it > > will be soon published. Here's the pewaa release: > > > > http://www.ars.usda.gov/News/docs.htm?docid=1261 > > > > Fight Osteoporosis: Bone Up on B12 > > By lie n Bliss > > March 28, 2005 > > Women are about four times more likely than men to develop > > osteoporosis, or weak, porous bones. But a new study links vitamin > > B12 deficiency with low bone mineral density in men, and confirms > > similar, previously reported findings in women. > > > > Researchers funded by the Agricultural Research Service (ARS) > > reported the findings in the Journal of Bone and Mineral Research. > > The study was led by epidemiologist Tucker with the Jean > > Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at > Tufts > > University in Boston, Mass. Tucker directs the HNRCA's Dietary > > Assessment and Epidemiology Research Program. > > > > While vitamin B12 deficiency has been linked with low levels of > > markers of bone formation, the mechanism behind the relationship is > > not known. > > > > The scientists examined the relationship between vitamin B12 blood > > levels and indicators of bone health measured in 2,576 men and > > women, aged 30 to 87, participating in the Framingham Osteoporosis > > Study. They found that those with vitamin B12 levels lower than 148 > > picomoles per liter (pM/L) were at greater risk of osteoporosis > than > > those with higher levels. Plasma B12 levels below 185 pM/L are > > considered " very low, " according to some experts. > > > > The study found that those with vitamin B12 concentrations below > 148 > > pM/L had significantly lower average bone mineral density--at the > > hip in men, and at the spine in women--than those with > > concentrations above. > > > > The range of symptoms of B-12 deficiency includes anemia, balance > > disturbances and cognitive decline. Osteoporosis usually progresses > > with no outward effect until a fracture occurs. > > > > The recommended dietary allowance for vitamin B12 is 2.4 micrograms > > per day for both men and women. Low stomach acid and aging can > lower > > the ability to absorb the vitamin. Those over age 50 are encouraged > > to consume fortified foods or supplements containing B12. > > > > This study suggests adequate vitamin B12 intake is important for > > maintaining bone mineral density. Animal protein foods, such as > > fish, liver, beef, pork, milk and cheese are good sources of > vitamin > > B12. > > > > ARS is the U.S. Department of Agriculture's chief scientific > > research agency > > > > > > Mike Quote Link to comment Share on other sites More sharing options...
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