总摄入怎么度量?你查过文献么?24小时尿钠测量法基本上并不能准确反映食盐摄入量甚至钠摄入量。单次尿钠量测值在一定食盐摄入范围，和食盐摄入量无明确关联。健康人群尿钠量各地不同，影响因素是地理环境，而非食盐摄入量。
如果测量尿钠值测算实摄入量，要有严格的条件。比如下篇文章认为很多广泛采用的24小时尿钠检测方法均不正确。
Errors in estimating usual sodium intake by the Kawasaki formula alter its relationship with mortality: implications for public health
International Journal of Epidemiology, 22 June 2018

以下文章否定了尿钠和摄入量估算值与某些常常被认为的食盐摄入导致疾病的关联性。


O’Donnell M, Mente A, Rangarajan S et al.  Urinary sodium and potassium excretion, mortality, and cardiovascular events. N Engl J Med 2014;371:612–23.

O’Donnell MJ, Yusuf S, Mente A et al.  Urinary sodium and potassium excretion and risk of cardiovascular events. JAMA 2011;306:2229–38.

Mente A, O’Donnell M, Rangarajan S et al.  Associations of urinary sodium excretion with cardiovascular events in individuals with and without hypertension: a pooled analysis of data from four studies. Lancet 2016;388:465–75.
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Graudal N, Jurgens G, Baslund B, Alderman MH. Compared with usual sodium intake, low- and excessive-sodium diets are associated with increased mortality: a meta-analysis. Am J Hypertens 2014;27:1129–37.


【 在 randomh 的大作中提到: 】
: 国外很多论文是摄入总盐，而不是食盐，原来也有用尿盐检验摄入总盐的，因为有正相关性，当然你说不相关，那需要更权威的数据
: 另外不要用你的案例question宏观数据，这个逻辑上不挂钩
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