美国最新研究成果显示，如果每天少吃3克盐，人们患心脏病等疾病的风险会大大降低。
美国加利福尼亚大学旧金山分校等机构的研究人员在美国《新英格兰医学杂志》（NEJM）网络版上报告说，他们收集了美国心血管疾病患者的有关数据，然后通过电脑模拟分析了每天食盐量多少对人们身体健康的影响。结果显示，如果人们将每天的食盐量减少3克，那么新增心脏病病例会减少11%，心脏病发作病例会减少13%，中风病例会减少8%，死亡病例会减少4%。
大多数美国健康机构建议，人体每天摄盐量最好不多于5.8克，如果年龄超过40岁，每天摄盐量最好少于3.8克。
原始出处：
NEJM January 20, 2010 (10.1056/NEJMe0910352)
Compelling Evidence for Public Health Action to Reduce Salt Intake
Lawrence J. Appel, M.D., M.P.H., and Cheryl A.M. Anderson, Ph.D., M.P.H.
Health care reform is front and center on the U.S. political agenda. Actively debated are fundamental changes to the health care delivery system, which largely focuses on the diagnosis and treatment of existing disease. Prevention of disease, commonly accomplished through public health interventions, appears to be an afterthought, perhaps because the benefits are mistakenly perceived as small and the cost savings delayed.
