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Home Health & Medicine

Replacing red meat with a plant-based diet increases longevity

Yet another important study that suggests red meat is very bad for our health.

Tibi Puiu by Tibi Puiu
June 13, 2019
in Health & Medicine, News

People who replaced red meat in their diet with nuts, seeds, fish, vegetables and whole grains, experienced a more than 10% reduction in their risk of mortality. The biggest gains in longevity were experienced by those who ate considerable amounts of processed red meat and then switched to a plant-based diet.

Credit: Pixabay.
Credit: Pixabay.

In their new study, nutritionists at the Harvard T.H. Chan School of Public Health tracked the diets and health outcomes of more than 80,000 for several decades. During the study’s timeframe, 14,019 deaths were recorded.

The researchers analyzed the association of changes in red meat consumption over eight years with mortality risk during the subsequent eight years. The findings revealed a strong association between shifting away from red meat and leading a longer, healthier life.

“An increase in total red meat consumption of at least half a serving per day was associated with a 10% higher mortality risk. For processed and unprocessed red meat consumption, an increase of at least half a serving per day was associated with a 13% higher mortality risk,” the authors wrote in the British Medical Journal.

Although red meat consumption in the United States had declined in recent years, it’s still more than twice the global average. Previously, studies have linked high red meat consumption — particularly processed red meat (i.e. hot dogs, bacon, sausages) — with an increased risk of type 2 diabetes, cardiovascular disease, and certain types of cancer. Scientists think that these adverse health outcomes may be due to red meat and processed red meat components such as saturated fats, sodium, preservatives, and potential carcinogens like polycyclic aromatic hydrocarbons.

Even a moderate amount of red meat can be dangerous. A recent study, which followed half a million men and women who signed up for the UK Biobank research project, found that the risk of bowel cancer for people who eat 76g of processed red meat a day (the equivalent of 3 rashers of bacon) is 20% higher compared with those who averaged 21g a day. That’s equivalent to an approximately 10% increase in risk per daily rasher of bacon.

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While there are a lot of studies showing that red meat consumption is strongly associated with increased mortality risk, this study is different. It’s one of the few that tracked what happened when people switched away from red meat. According to the researcher’s estimate, replacing red and processed meats with nuts, seeds, veggies, whole grains, and alternative proteins (fish, up to an egg a day, etc) leads to a 10% average reduction in the risk of mortality.

Although this is an observational study, which cannot establish cause and effect, the findings agree with a growing body of literature on the adverse effects of red meat.

“Our analysis provides further evidence to support the replacement of red and processed meat consumption with healthy alternative food choices,” the authors concluded.

Tags: Baconprocessed red meatred meat
Tibi Puiu

Tibi Puiu

Tibi is a science journalist and co-founder of ZME Science. He writes mainly about emerging tech, physics, climate, and space. In his spare time, Tibi likes to make weird music on his computer and groom felines.

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