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AskScience AMA Series: I’m David Johns, a doctoral student at Columbia University’s Mailman School of Public Health. I study the scientific arguments around the controversial question of how much salt we should be eating in order to stay healthy. Ask Me Anything!

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AskScience AMA Series: I’m David Johns, a doctoral student at Columbia University’s Mailman School of Public Health. I study the scientific arguments around the controversial question of how much salt we should be eating in order to stay healthy. Ask Me Anything!	1948