It turns out hospitals might be making people sicker due to their design. Dr. Dhruv Khullar, a resident physician at Massachusetts General Hospital and Harvard Medical School says hospitals are hotbeds for illness, injury, and poor mental health. Nearly a third of ICU patients in high-income countries get new infections while hospitalized. It’s mainly because they’re all squished in together—which also makes it harder to sleep amid already unsafe noise levels. In fact, Dr. Khullar believes hospitals could save money by offering private rooms, since they’d have fewer illnesses to treat.