Eating more meat and eating less meat has always been considered healthy. A large study published in the Journal of the American Medical Association's Journal of Internal Medicine confirmed this on the 1st and found that more intake of plant proteins helps reduce the risk of death, while high animal protein increases the risk of death.
The first author of the research paper, Dr. Song Mingyang of the Massachusetts General Hospital, told Xinhua News Agency reporters that in their research population, the main sources of plant protein intake in diets are bread, cereals, pasta, nuts and beans, and animal protein. The main sources are pigs, cattle, lamb and other red meat, chicken, milk, eggs and fish.
Song Mingyang said: "Overall, plant proteins are superior to animal proteins (for human health), and chicken and fish are superior to red meat, milk and eggs in animal protein."
He explained that previous studies mainly focused on protein intake, ignoring the food source of protein. From a dietary point of view, the vast majority of nutrients consumed are derived from food, and the nutrients in each food are numerous. Therefore, they believe that the study of the food source of protein is equally important to health, and analyzed the data of two large-scale follow-up studies in the United States.
In both studies, the researchers collected information on the diet, lifestyle, health status, and disease diagnosis of more than 100,000 nurses and health professionals through questionnaires. At the same time, the researchers used family reports and the national death database to collect data on these subjects. Death information.
In the latest study, Song Mingyang et al. used a statistical model to analyze the relationship between animal protein and plant protein intake and mortality. As a result, it was found that the food source of protein has an important effect on health. The intake of high animal protein, especially animal protein from red meat, is positively correlated with the risk of death, while the intake of high plant protein is inversely related to the risk of death.
Further research shows that the positive correlation between high animal protein intake and death risk is only found in people with unhealthy lifestyles, such as obesity or underweight, alcohol abuse, smoking or lack of exercise; for people with a healthy lifestyle, This association does not exist.
Song Mingyang said that currently there is a lack of scientific research on the source of protein foods, and their research has largely filled the gaps in this area. "Our dietary guidelines should not only focus on the absolute intake of protein, but should also focus on their food sources."
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