In this episode, Dr. Frank Lipman talks with cardiovascular research scientist Dr. James Dinicolantonio about the myths in our culture about salt. Thanks to a few misconstrued scientific opinions backs in the 1950s, many Americans think salt is poison — but it’s an essential mineral, and a low-salt diet can actually cause a number of health problems. Those include dehydration, increased heart rate, exercise intolerance, and iodine deficiency.