BMJ 2010年的这篇文章 http://bmjopen.bmj.com/content/3/12/e003733.full 的结果是: 全球平均日钠消耗量3.95克/人，接近世卫组织推荐的每日钠限量2g/day的两倍。中日韩和中东国家、蒙古都是重灾区。每年有165万人死于因过量食盐导致的心血管疾病。
美国2013年统计的人均每日钠的摄入量为3.4克。世卫的报告数据，中国人人均每日摄入的钠盐的量为5.3到6克之间。
Results
In 2010, global mean sodium intake was 3.95g/day (95% uncertainty interval: 3.89 to 4.01). This was nearly twice the WHO recommended limit of 2g/day and equivalent to 10.06 (9.88–10.21) g/day of salt. Intake in men was 10% higher than in women; differences by age were small. Intakes were highest in East Asia, Central Asia and Eastern Europe (mean >4.2g/day) and in Central Europe and Middle East/North Africa (3.9–4.2g/day). Regional mean intakes in North America, Western Europe and Australia/New Zealand ranged from 3.4 to 3.8g/day. Intakes were lower (<3.3g/day), but more uncertain, in sub-Saharan Africa and Latin America. Between 1990 and 2010, modest, but uncertain, increases in sodium intakes were identified.
Conclusions
In this modeling study, 1.65 million deaths from cardiovascular causes that occurred in 2010 were attributed to sodium consumption above a reference level of 2.0 g per day. (Funded by the Bill and Melinda Gates Foundation.)
Figure 6
Sodium intakes by country, for ages 20+, average of both sexes, in 2010.
(A) Mean intakes in g/day and (B) relative uncertainty*.
Note: *Monte Carlo SEs divided by the mean of these intake estimates.
NEJM Papers Add to Ongoing Salt Debate
