Shifting human salty taste preference: Potential opportunities and challenges in reducing dietary salt intake of Americans.

Dietary salt reduction of Americans has been a focus of public health initiatives for more than 40 years primarily due to the association between high salt intake and development of hypertension. Despite past efforts, salt intake of Americans has remained at levels well above dietary recommendations, likely due in part to the hedonic appeal of salty taste. As such, in 2010 the Institute of Medicine suggested a strategy of gradual salt reduction of processed foods, the primary source of Americans' dietary salt intake, via an approach intended to minimize impact on consumer acceptability of lower-sodium foods. This brief review discusses the ontogeny and development of human salt taste preference, the role of experience in shifting salt preference, and sources of dietary salt. Our current understanding of shifting human salt taste preference is discussed within the context of potential opportunities for success in reducing dietary salt, and gaps in the research that both limit our ability to predict effectiveness of gradual salt reduction and that need be addressed before a strategy to shift salt preference can realistically be implemented.