The podcast episodes provided discuss the high levels of sodium consumption among Americans and the associated health risks, making it a central topic.

In the The Substitute To Cut Sodium episode, the focus is on the CDC's warnings about high sodium intake and the FDA's proposal to allow safe salt substitutes like Kerry's new TasteSense Salt, which claims to reduce sodium by 60% without the metallic taste of potassium chloride.

The #297 - AMA #58: Iron: its role in health, testing methods, and strategies for preventing and managing iron deficiency episode also touches on sodium intake and its potential impact on blood pressure, as well as considerations for different individuals regarding sodium consumption.