Rachel Held Evans, an influential progressive Christian writer and speaker who cheerfully challenged American evangelical culture, died on Saturday at a hospital in Nashville, Tennessee. Evans, 37, entered the hospital in mid-April with the flu, and then had a severe allergic reaction to antibiotics, as she wrote on Twitter several weeks ago. According to her husband, Dan Evans, she then developed sustained seizures. Doctors put her in a medically induced coma, but some seizures returned when her medical team attempted to wean her from the medications that were maintaining her coma. Her condition worsened on Thursday morning, and her medical team discovered severe swelling of her brain. She died early on Saturday morning.