发表在《JAMA内科学》上的一项研究发现，低钠的DASH4D（阻止高血压的饮食方法用于糖尿病）饮食显著降低了2型糖尿病成年人的血压。试验涉及102名参与者，他们被随机分配到四种为期五周的饮食：低钠或高钠的DASH4D饮食，以及低钠或高钠的典型美国饮食。与高钠对照饮食相比，低钠DASH4D饮食使收缩压降低了4.6毫米汞柱，舒张压降低了2.3毫米汞柱。大部分血压降低发生在前三周，且钠减少的效果比DASH4D饮食更为显著。不良事件很少，即使对于服用多种降压药的人来说，饮食改变也带来了额外的好处。
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