如果美国人少吃脂肪呢? 对死亡率影响的定量估计
W S Browner1, J Westenhouse, J A Tice
1Department of Medicine, Veterans Affairs Medical Center, San Francisco, CA 94121.
JAMA
|June 26, 1991
概括
减少饮食脂肪摄入量可以显著降低心脏病和某些癌症的死亡率. 这种饮食改变可能会在美国每年预防大约4.2万例死亡,使预期寿命增加3-4个月.
科学领域:
- 营养科学 营养科学
- 公共卫生 公共卫生
- 流行病学 流行病学
背景情况:
- 美国人平均每天37%的能量来自脂肪.
- 建议将脂肪摄入量限制在30%以减少慢性疾病的风险.
- 食脂肪与冠状动脉心脏病和某些癌症有关.
研究的目的:
- 估计饮食脂肪摄入量减少对美国死亡率的影响.
- 量化冠状动脉心脏病和癌症死亡的潜在减少.
- 评估对美国成年人死亡率和预期寿命的整体影响.
主要方法:
- 模拟减少和脂肪和胆固醇消费的影响.
- 根据饮食脂肪减少,估计血清胆固醇水平的变化.
- 预测冠心病和特定癌症的死亡率变化.
主要成果:
- 减少饮食脂肪可以将冠状动脉心脏病死亡率降低5%-20%.
- 有可能更大比例减少因脂肪相关癌症的死亡率.
- 估计每年推迟约42,000名成年人死亡,减少2%.
- 平均预期寿命可能增加34个月,主要是65岁以上的人.
结论:
- 限制饮食脂肪摄入,通过降低死亡率,为公众健康带来了显著的好处.
- 主要的益处是在冠心病和潜在的癌症死亡率中观察到的.
- 预计预期寿命将略有增长,尽管需要考虑降低胆固醇的潜在风险.
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