If you want to lead a healthy, long life, read on. Researchers have found that diets high in protein, particularly plant protein, are associated with a lower risk of death from any cause.
Diets high in protein, particularly protein from plants such as legumes (peas, beans, and lentils), whole grains, and nuts, have been linked to lower risks of developing diabetes, heart disease, and stroke.
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While regular consumption of red meat and high intake of animal proteins have been linked to several health problems, the study published in the journal The BMJ, said.
But data on the association between different types of proteins and death are conflicting.
So researchers based in Iran and the US set out to measure the potential dose-response relation between intake of total, animal, and plant protein and the risk of death from all causes, cardiovascular disease, and cancer.
They reviewed the results of 32 studies that reported risk estimates for all-cause, cardiovascular, and cancer mortality in adults aged 19 or older.
All studies were thoroughly assessed for bias (problems in study design that can influence results).
Mathematical models were then used to compare the effects of the highest versus lowest categories of protein intake, and analyses were done to evaluate the dose-response relations between protein intake and mortality.
During a follow-up period of up to 32 years, 113,039 deaths (16,429 from cardiovascular disease and 22,303 from cancer) occurred among 715,128 participants.
The results show that a high intake of total protein was associated with a lower risk of all-cause mortality compared with low intake.
Intake of the plant diet was associated with an eight percent lower risk of all-cause mortality and a 12 percent lower risk of cardiovascular disease mortality.
Intake of animals were not significantly associated with the risk of cardiovascular disease and cancer mortality, the study said.
A dose-response analysis of data from 31 studies also showed that an additional three percent of energy from plant proteins a day was associated with a five percent lower risk of death from all causes.
“These findings have important public health implications as intake of it can be increased relatively easily by replacing animal protein and could have a large effect on longevity,” the researchers said.
“While further studies are required, these findings strongly support the existing dietary recommendations to increase consumption of plant proteins in the general population.” (IANS)