Dr. Castelo practices family medicine (medicina geral e familiar) and has his Master of Public Health in lifestyle medicine (Mestre em Saúde Pública, Medicina do Estilo de Vida). He is board-certified in lifestyle medicine with the American Board of Lifestyle Medicine and the International Board of Lifestyle Medicine and is certified in whole food, plant-based nutrition from the T. Colin Campbell Center for Nutrition Studies via eCornell.