Kosuke Yasukawa (born 1982) is a Japanese physician practicing internal medicine in the United States. Born in Hyogo Prefecture, he graduated from Keio University School of Medicine in 2007 and completed his initial clinical training at the Japanese Red Cross Medical Center before moving to the United States. He subsequently completed an internal medicine residency at the University of Minnesota and an infectious diseases fellowship at Baylor College of Medicine, earning US board certification in both specialties. Alongside his clinical work in Florida, he communicates information about medicine, health, and learning through YouTube and other media. Bringing together research on learning and his experience studying medicine, his Japanese-language book “Kagakuteki Konkyo ni Motozuku Saiko no Benkyoho” explains active recall, spaced practice, and interleaving different types of problems. He examines how rereading and highlighting alone can create an inflated sense of understanding, and describes practical alternatives such as writing down what one remembers on a blank sheet of paper. The book also covers mnemonic techniques, sleep, exercise, and the study environment. His approach encourages learners to judge their progress through what they can retrieve and use, rather than simply through the time spent studying.
