Dr. Andrea Tufano-Sugarman is the first to admit she didn’t always live the way she does now. In medical school and residency, she ate poorly, slept badly, and didn’t prioritize exercise . It was only once she started practicing as an oncologist—and the data on cancer prevention started to land differently—that she began rebuilding her habits from the ground up. Her advice now, she warns up front, isn’t going to surprise anyone. “Everything I do is quite boring and quite routine,” says Tufano-Sugarman, a gynecologic medical oncologist at Memorial Sloan Kettering Cancer Center in New York. That, essentially, was the party line when we asked four oncologists what they do in their own lives to try to prevent cancer. They prioritize fundamentals— sleep , fiber , movement , regular screenings —not always perfectly, but consistently. Here are 10 daily habits oncologists swear by. They don’t drink alcohol Two years ago, Tufano-Sugarman went from minimizing her alcohol intake to cutting it out completely.…