From the Undark The Downstream Effects of Fixing a Racist Lung Test By Felice J. Freyer, Harvard Public Health As her patient blows into a snorkel-like mouthpiece, Jennifer Winget cheers her on. “Keep going! Keep going!” she urges, voice rising all six times she says it as the patient strains to expel every last bit of air in her lungs. Winget, a respiratory therapist at Boston Medical Center, watches a display showing an image of a pair of lungs, a bolus of air swelling within. Numbers fill a grid showing how much air the patient expelled, and how fast. The patient, seated next to her in a glass booth, is using a device called a spirometer, which measures air flow in the lungs. It was installed in May as part of an equipment upgrade that included one especially notable change: Winget no longer has to ask patients for their race and ethnicity. Before, the computer program that assessed lung function sorted patients into one of four categories: Caucasian, Black, Asian, or His...