San Cristóbal de Las Casas Journal: In Mexico, a Healer Who Asks for Nothing in Return Choose your FREE 6-pc Gift with any $42.50 Lancôme Purchase (Up to a $140 Value!) Shop now at! Valid 5/3 through 5/19

Sergio Castro, 72, is neither doctor nor priest, but he fills a gap in Mexico’s ragged safety net in health care, accepting no money from his patients, who are mostly Mayans.