Dr. Keisuke Miyamoto is a dual-licensed physician in the United States and Japan, and Japan's first diplomate of the American Board of Lifestyle Medicine, helping lead the growth of this field throughout the country. In the United States, he is board-certified by the American Board of Internal Medicine, the American Board of Lifestyle Medicine, and the American Board of Obesity Medicine, and is a Fellow of the American College of Physicians (FACP). In Japan, he is certified in Internal Medicine and Lifestyle Medicine and is a Fellow of the Japanese Society of Internal Medicine (FJSIM), with additional specialist training and prior certification spanning respiratory medicine, cancer chemotherapy, and pain and palliative care.

He currently serves as Clinical Professor at the University of Hawai'i John A. Burns School of Medicine (JABSOM), Associate Professor and Lecturer at Keio University's Center for Preventive Medicine, and as a Board Member and Consultant for the Japanese Society of Lifestyle Medicine.

His specialty centers on longevity and preventive medicine, with a practice built around extending healthspan and intercepting disease before it starts. His work is rooted in the belief that health should not be defined only by the absence of disease, but by the presence of energy, purpose, and long-term well-being, and he champions a life-course approach to care focused on prevention and personalized lifestyle strategies.

At the heart of Dr. Miyamoto's philosophy is the idea that brain health is key to lasting change. His research focuses on the relationship between cardiometabolic health and long-term brain function, exploring how modifiable lifestyle factors may influence cognitive resilience and the risk of neurodegenerative disease. He supports patients in building cognitive and emotional resilience through sleep, nutrition, movement, stress recovery, and meaningful social connection, giving people the mental clarity and motivation they need to reshape daily habits and live more fully.

Dr. Miyamoto has worked across a wide range of healthcare settings, from critical care units to community-based programs, bringing together biomedical science with practical, evidence-informed tools to help people perform at their best throughout all stages of life. His approach draws from neuroscience, behavioral science, lifestyle and longevity medicine, and public health, with special attention to how culture and environment shape behavior, grounded in the understanding that metabolic health and brain health are inseparable. His research and clinical findings have been shared through peer-reviewed publications and academic presentations spanning lifestyle medicine, metabolic health, and chronic disease prevention.

He continues to advise medical schools and institutions in both Japan and the United States, guiding translational research and mentoring emerging leaders in the field. Dr. Miyamoto envisions a future where healthcare is designed to keep people well, not just treat them once they are sick.