Dag Linnarsson

Dag Linnarsson is a Professor of Physiology at Karolinska Institutet, Department of Physiology and Pharmacology, where he has held the position since 1986 and transitioned to Senior Professor in 2009. His research primarily focuses on environmental physiology, with an emphasis on the human body's response to extreme conditions such as microgravity, hypergravity, and spaceflight. He leads the Environmental Physiology Research Group and the Lars Karlsson team, investigating topics like pulmonary function in astronauts, musculoskeletal countermeasures during space missions, and the effects of artificial gravity.

His work spans studies on bed rest as a spaceflight analog, lung diffusing capacity, and nitric oxide dynamics under varying environmental pressures. Recent research includes assessing pulmonary nitric oxide levels in astronauts during long-term space missions and exploring the physiological impacts of lunar dust exposure. Linnarsson has also contributed to standardizing bed rest protocols for spaceflight research and evaluating centrifugation as a countermeasure for muscle and bone loss.

He maintains affiliations with Karolinska Institutet’s C3 Fysiologi och farmakologi team and collaborates on interdisciplinary projects addressing space medicine challenges. While no formal student listings or awards are explicitly mentioned, his extensive publication record highlights contributions to respiratory physiology, cardiovascular adaptation, and musculoskeletal health in extreme environments.