Why did FDA Commissioner Marty Makary resign, and who is succeeding him?

Marty Makary resigned as FDA Commissioner after President Donald J. Trump signed off on a plan to fire him late last week; Makary chose to resign days later. Deputy Commissioner Kyle Diamantas, a lawyer who had overseen food regulation at the agency, will serve as acting commissioner.

What does the news report say about the timing and sequence of events leading to Makary's departure?

The news reports that President Donald J. Trump signed off on a plan to fire Makary late last week, as first reported by the Wall Street Journal; then, days later — and first reported by Politico on Tuesday afternoon — Makary chose to resign, prompting the appointment of Kyle Diamantas as acting commissioner.

Marty Makary Leaves Mixed Legacy as FDA Commissioner

May 12, 2026

FDA Commissioner Marty Makary resigned after President Trump moved to fire him, leaving the agency at a crossroads. Deputy Commissioner Kyle Diamantas will serve as acting commissioner, having previously overseen food regulation.

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Marty Makary Leaves Mixed Legacy as FDA Commissioner

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