The selection of Jim O’Neill, a former Silicon Valley executive, drew objections from Democrats, who noted his lack of medical or scientific training.

© Amy Rossetti/Department of Health and Human Services, via Associated Press

The selection of Jim O’Neill, a former Silicon Valley executive, drew objections from Democrats, who noted his lack of medical or scientific training.

© Amy Rossetti/Department of Health and Human Services, via Associated Press

David Wallace-Wells and Emily Oster argue that the effects of MAHA will be long-lasting.