Fri, Sep-28-01, 01:54
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Forum Founder
Posts: 37,415
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Plan: LC, GF
Stats: 241/190/140
BF:
Progress: 50%
Location: Eastern ON, Canada
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Quote:
Originally posted by Raven
Protein: While vegetarian diets meet protein requirements, they are typically lower in total intake of protein than non-vegetarian diets. This can be more beneficial than a meat diet as excessively high protein intake has been linked to osteoporosis and kidney failure.
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High protein diets, whether with or without carbs ... have never been proven to damage healthy kidneys. If a person's kidneys are already damaged, from infection or disease, then they need to be careful with protein intake. From Protein Power
Quote:
...... There are several key studies that stand out in laying this myth to rest. One study was done in Israel a few years back. It compared people who ate lots of protein to people who had been vegetarians for an average of about thirteen years and who ate minimal amounts of protein. The only protein they got was vegetable protein. Researchers did careful cross-matching so they had a perfect match in terms of age and sex in the two groups. When they compared the normal decline in kidney function that naturally occurs in people as they age, the researchers found no difference between the heavy-protein eaters and the low-protein eaters.
There have also been several studies out of Germany from a group of researchers who studied body builders, who tend to eat lots of protein to build muscle. Those researchers discovered that not only do higher protein diets not cause deterioration, they actually enhance kidney function. The protein itself makes the kidneys function more efficiently.
http://eatprotein.com/answers8.html#8g
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High protein diets have never been proven to cause calcium to leach from the bones and cause osteoporosis. Again, from Protein Power
Quote:
.........The theory behind this whole idea is that when you eat protein, it’s broken down into substances that are a little bit acidic. Supposedly this more acidic blood somehow leaches the calcium out of the bones, and it can end up giving us osteoporosis, at a later date.
Now all that sounds logical, but in fact it just doesn’t happen. This has been studied extensively over long periods of time. What researchers have found is when people eat a lot of protein, especially meat protein, they don’t have any increase in urinary calcium. In other words, they’re not leaching the calcium out of their bones and losing it in their urine as the theory would imply.
And when we look at the skeletal remains of hunters and gatherers who ate two to three times the amount of protein considered "safe" for us today, you find their bones are 17 percent more dense than ours-given the comparison is done between individuals of the same height and gender.
Lastly, there have been studies published recently that correlate the elevated insulin syndrome with bone loss. Because elevated insulin makes you get rid of calcium from your bones, it may actually be the insulin problem causing the osteoporosis! It certainly isn’t the protein in the diet.
http://eatprotein.com/answers9.html#9f
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Doreen
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