Once, eating whole foods and avoiding toxins was associated with a lefty worldview. Now, being a “crunchy mom” is more often about “health freedom.”

© Hadley Chittum for The New York Times

The category of ultraprocessed foods is so broad it borders on useless.

Readers worry that “our lives are at stake” if he becomes health secretary but also find areas of agreement. Also: Unity, not revenge; criminal justice in New York.