Red meat is not only unhealthy but can be positively lethal, according to a major United States study.
The
research shows regularly eating red meat - especially the processed
variety - dramatically increases the risk of death from heart disease
and cancer.
Each
additional daily serving of processed red meat, equivalent to one
hot-dog or two rashers of bacon, raised the chances of dying by a fifth.
But the study found that cutting red meat out of the diet led to significant benefits.
Replacing red meat with fish, poultry, or plant-based protein foods contributed to a longer life, the study says.
Nuts were said to reduce the risk of dying by 20 per cent - making a case for swapping roast beef for nut roast.
Sky
News says data from 121,342 men and women taking part in two large U.S
health and lifestyle investigations were analyzed to produce the
findings, published in the journal Archives of Internal Medicine .
The studies monitored the progress of their participants for more than 20 years and gathered information about diet.
In total, scientists documented 23,926 deaths including 5,910 from heart disease and 9,364 from cancer.
Senior
author Professor Frank Hu, from Harvard School of Public Health in
Boston, said: "This study provides clear evidence that regular
consumption of red meat, especially processed meat, contributes
substantially to premature death.
"On
the other hand, choosing more healthful sources of protein in place of
red meat can confer significant health benefits by reducing chronic
disease morbidity (illness) and mortality."
Cancer
prevention charity the World Cancer Research Fund recommends that
people avoid processed meat entirely and limit their consumption of red
meat to 500g a week.
Dr.
Rachel Thompson, the charity's deputy head of science, said: "This
study strengthens the body of evidence which shows a link between red
meat and chronic diseases such as cancer and heart disease. The research
itself seems solid and is based on two large-scale cohort studies
monitored over a long period of time."
But the findings were challenged by Dr. Carrie Ruxton from the Meat Advisory Panel, an expert body funded by the meat industry.
She
said: "This US study looked at associations between high intakes of red
meat and risk of mortality, finding a positive association between the
two. However, the study was observational, not controlled, and so cannot
be used to determine cause and effect.
"The
authors' conclusion that swapping a portion of red meat for poultry or
fish each week may lower mortality risk was based only on a theoretical
model. This conflicts with evidence from controlled trials."
Dr.
Ruxton pointed out that meat and meat products were significant sources
of essential nutrients such as iron, zinc, selenium, B vitamins and
vitamin D.
In
the United Kingdom, red meat was "critically important" to zinc intake,
contributing 32 per cent of the total for men and 27 per cent for
women. Red meat also contributed around 17 per cent of total dietary
iron intake in the UK.
Dr.
Ruxton added: "In summary, this paper should not be used to dissuade
people from reducing their current intake of red meat when it provides
essential nutrients that are required as part of a healthy balanced
diet."
Courtesy: The Nation
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