Osvaldo Rodrigues dos Santos obtained his Master's degree in Health Psychology in 2003 from the Instituto Superior de Psicologia Aplicada. He obtained his bachelor's degree (licenciatura) in Psychology, area of Psychotherapies and Counselling in 1994 from the Faculdade de Psicologia, Universidade de Lisboa. Currently, he is invited assistant teacher (Assistente Convidado) of the Faculdade de Medicina, Universidade de Lisboa and researcher of the Instituto de Saúde Ambiental da Faculdade de Medicina, Universidade de Lisboa. He is the coordinator of the Environmental Health Behavior Lab, dedicated to the study of determinants and effects of behaviors having synergic action on human health and on planetary health. He is the Editor-In-Chief of the The Psychologist: Practice and Research Journal, the official journal of the Portuguese Association of Psychologists (Ordem dos Psicólogos Portugueses, OPP). From 18th March 2021 to 31st December 2021, he was member of the Portuguese Task Force on Behavioral Sciences, constituted in March 2021 by a government decree as an independent scientific group for informing COVID-19 related public health measures. He is also a clinical psychologist at the Hospital da Cruz Vermelha Portuguese (Red Cross Hospital), in Lisbon, integrated into the multidisciplinary team of bariatric surgery for treatment of obesity. Moreover, he has clinical activity at the clinic Hospital Monsanto, Lisboa, mainly focusing on mood (e.g., depression) and anxiety disorders related to psychotherapy (cognitive-behavioral and experiential approach). He published more than 60 scientific papers (with more than 2821 collaborators as co-authors) and supervised 16 master-degree students from different faculties, namely: Faculdade de Medicina, Universidade de Lisboa, Escola Nacional de Saúde Pública, Universidade Nova de Lisboa, Escola de Ciência e Tecnologias da Saúde, Universidade Lusófona de Humanidade, and Departamento de Psicologia. He has been involved in over 65 research projects, mostly international ones (PI in more than half of these projects). He got several scientific distinctions (namely, oral communication and poster presentation prizes). His main fields of scientific production are environmental health, public health, health psychology, health promotion, health literacy, epidemiology, obesity, nutrition, food behavior, physical activity, quality of life, mental health, planetary health, health impact assessment, effectiveness evaluation, qualitative research. Currently, he is involved in four FCT projects (in different stages of accomplishment): A Randomized Controlled Trial to evaluate the effects of the Mediterranean Diet as an adjuvant in the treatment of Major Depressive Disorder| PTDC/SAU-NUT/3321/2020 (20% of dedication), Fertility, Migration and Acculturation: Intersectional approach to the sexual and reproductive experiences and expectations among Cape Verdean and Portuguese Families | PTDC/SOC-SOC/30025/2017 (15%), Indoor exposure to Heat and Adaptation Attitudes in the Elderly | EXPL/GES-AMB/0280/2021 (25%). In these projects, he is responsible for both qualitative and quantitative research tasks. His main leisure activities include playing chess, piano, saxophone, and tennis.