Healthy dietary patterns, such as the alternate Mediterranean diet and alternate Healthy Eating Index, benefit cardiometabolic health. However, several food components of these dietary patterns are primary sources of environmental chemicals. Here, using data from a racially and ethnically diverse US cohort, we show that healthy dietary pattern scores were positively associated with plasma chemical exposure in pregnancy, particularly for the alternate Mediterranean diet and alternate Healthy Eating Index with polychlorinated biphenyls and per- and poly-fluoroalkyl substances. The associations appeared stronger among Asian and Pacific Islanders. These findings suggest that optimizing the benefits of a healthy diet requires concerted regulatory efforts aimed at lowering environmental chemical exposure.

健康的饮食模式，例如替代地中海饮食和替代健康饮食指数，有利于心脏代谢健康。然而，这些饮食模式的一些食物成分是环境化学物质的主要来源。在这里，使用来自不同种族和民族的美国队列的数据，我们表明健康饮食模式评分与怀孕期间血浆化学物质暴露呈正相关，特别是对于替代地中海饮食和包含多氯联苯和全氯联苯和多氯联苯的替代健康饮食指数而言。氟烷基物质。这种关联在亚洲和太平洋岛民中似乎更为强烈。这些发现表明，优化健康饮食的益处需要协调一致的监管努力，旨在降低环境化学物质暴露。