In West Texas, some with severe illness have not been taken to a doctor until their conditions worsened, officials said.

There sat Robert F. Kennedy Jr., the nation’s top health official, at a Steak ‘n Shake with Fox News host Sean Hannity, raving about the fries.

In the Trump administration’s quest to “Make America Healthy Again,” there may be no bigger target than ultraprocessed foods.

Measles had been declared eliminated from the US in 2000. Now the disease is back with a vengeance. In February, an unvaccinated Texan child became the first person in a decade to die from measles in ...