Eating
red meat may boost the risk for kidney failure, but swapping even one daily
serving of red meat for another protein may reduce the risk, a large study from
Singapore suggested.
Red
meat intake is strongly associated with an increased risk of end-stage renal
disease, the loss of normal kidney function. The relationship was also
"dose dependent", which means the higher the consumption, the greater
the risk.
The
association held up even after compensating for factors that could skew the
results, such as lifestyle and other health conditions, the study authors
noted.
"Our
findings suggest that patients with chronic kidney disease or the general
population worried about their kidney health can still maintain protein intake
but consider switching to plant-based sources," said Dr Woon-Puay Koh,
professor in the office of Clinical Sciences at Duke-NUS Graduate Medical
School in Singapore.
"However,
if they still choose to eat meat, fish, shellfish and poultry are better
alternatives to red meat," said Koh, one of the study authors.
The
study adds new data to a conflicting body of evidence on the relationship
between protein in-take, particularly red meat, and kidney disease, experts
noted.
"It
adds useful and additional information to our knowledge base, but I'm not sure
if it necessarily tips the scale one way or another," said Dr Allon
Friedman, a nephrologist and associate professor of medicine at Indiana
University School of Medicine in Indianapolis.
"My
opinion is that it's still perfectly fine for individuals who are otherwise
healthy to consume red meat in moderation," he said.
Dr
William Mitch, professor of nephrology at Baylor College of Medicine in
Houston, said that plenty of studies have shown that low-protein diets may
benefit people who already have kidney damage.
However,
in the general population, there's no persuasive evidence that eating a lot of
protein causes kidney damage," he said.
Red
meat has been implicated in recent reports and studies as potentially harmful
to human health. The World Health Organisation (WHO) last year warned of a
possible link between red meat and cancer. Similarly, a November 2015 study in
the journal of cancer found that meat cooked at high temperatures could
potentially affect kidney cancer risk.
For
the new study, researchers followed more than 63,000 Chinese adults in
Singapore for an average of 15.5 years.
The
food questionnaires were used to gather data on people's daily protein
consumption. The records on the incidence of end stage renal disease came from
a nationwide renal registry.
About
97 percent of red meat intake in the study population consisted of pork. Other
protein sources included poultry, fish, shellfish, eggs, dairy products, soy
and legumes.
Although
pork may appear white after being cooked, but it still considered red meat,
said the US Department of Agriculture.
People
consuming the highest amounts of red meat had 40 percent increased risk of
developing end stage kidney disease, compared with people who ate the lowest
amounts, the study found.
No
association was found with poultry, fish, eggs or dairy products, while soy and
legumes appeared to be slightly protective. The study also found that replacing
one serving of red meat with another protein reduced the risk of kidney failure
up to 62 percent for poultry.
Credit: http://dailytimes.com.pk
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