Kaplan N M
University of Texas Southwestern Medical Center at Dallas, 75235, USA.
Am J Clin Nutr. 2000 May;71(5):1020-6. doi: 10.1093/ajcn/71.5.1020.
The current US dietary guideline for sodium is a limit of 2.4 g/d or 6 g NaCl/d. This amount of sodium is far in excess of any physiologic need and is likely an essential though not by itself sufficient primary cause of hypertension as well as a contributor to many other cardiovascular and renal abnormalities. The evidence incriminating the current excessive consumption of sodium derives from epidemiologic, experimental, and interventional data, most of which support a threshold of approximately 100 mmol/d for the harmful effects of sodium to be expressed. Although the current recommendation may not be low enough to go below that threshold, it is an appropriate and attainable goal for now.
美国目前的钠膳食指南规定，钠的摄入量限制为2.4克/天或氯化钠6克/天。这个钠含量远远超过任何生理需求，很可能是高血压的一个必要的原发性病因（尽管并非唯一充分病因），也是许多其他心血管和肾脏异常的一个促成因素。现有证据表明，当前钠摄入过量源于流行病学、实验和干预数据，其中大部分数据支持，要使钠的有害影响显现出来，钠摄入量的阈值约为100毫摩尔/天。尽管目前的建议摄入量可能还没有低到足以低于该阈值，但这是目前一个合适且可实现的目标。
