适量的碳水化合物饮食可能是长寿的关键 - Diet moderate in carbs could be key to longer life-华东公共卫生
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适量的碳水化合物饮食可能是长寿的关键

Diet moderate in carbs could be key to longer life

[日期:2018-08-20] 来源:UPI  作者:华东公共卫生 录入 [字体: ]
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碳水化合物饮食与长寿

      FRIDAY, Aug. 17, 2018 -- You've probably heard about the high-carb diet and the low-carb diet, but a new study suggests a moderate-carb diet could be the key to longevity. Researchers followed more than 15,000 people in the United States for a median of 25 years and found that low-carb diets (fewer than 40 percent of calories from carbohydrates) and high-carb diets (more than 70 percent of calories) were associated with an increased risk of premature death.
      Moderate consumption of carbohydrates (50 to 55 percent of calories) was associated with the lowest risk of early death.
      The researchers estimated that from age 50, people eating a moderate-carb diet would live another 33 years, four years longer than those with very low carb consumption, and one year longer than those with high carb consumption.
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      The investigators also found that all low-carb diets may not be equal. Eating more animal-based proteins and fats from foods like beef, lamb, pork, chicken and cheese instead of carbohydrates was associated with a greater risk of early death, while eating more plant-based proteins and fats from foods such as vegetables, legumes, and nuts lowered the risk.
      The study authors noted, however, that the participants' eating habits were self-reported and only assessed at the start of the study and six years later.    Their eating habits could have changed over 25 years, which might affect the link between carbohydrate intake and longevity, the scientists explained.
The researchers also analyzed data from more than 432,000 people in more than 20 countries and found that those with high and low carbohydrate intake had shorter life expectancy than those with moderate carbohydrate intake.
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The results of the study were published Thursday in The Lancet Public Health journal.
      Because this was an observational study, it could not prove cause and effect.
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According to study leader Dr. Sara Seidelmann, a cardiologist at Brigham and Women's Hospital,
      However, she said,
      Seidelmann suggested that,
      Two experts who wrote an editorial accompanying the study added a note of caution.
      "Such differences in risk associated with extreme differences in intake of a nutrient are plausible, but observational studies cannot completely exclude residual confounders when the apparent differences are so modest," according to Andrew Mente and Salim Yusuf, of McMaster University in Ontario, Canada.
More information
      The U.S. National Institute of Diabetes and Digestive and Kidney Diseases has more on diet and nutrition.
      Copyright © 2018 HealthDay. All rights reserved.

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