BMJ 2010年的這篇文章 http://bmjopen.bmj.com/content/3/12/e003733.full 的結果是: 全球平均日鈉消耗量3.95克/人，接近世衛組織推薦的每日鈉限量2g/day的兩倍。中日韓和中東國家、蒙古都是重災區。每年有165萬人死於因過量食鹽導致的心血管疾病。
美國2013年統計的人均每日鈉的攝入量為3.4克。世衛的報告數據，中國人人均每日攝入的鈉鹽的量為5.3到6克之間。
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
