Steven Bartlett with Dr. Roger Seheult
What might sunlight offer that a vitamin D pill does not? One hypothesis points to infrared light and the cell's defenses against oxidative stress.
Natural infrared light penetrates several centimeters into human tissue, stimulating subcellular mitochondrial melatonin production to neutralize local oxidative stress and preserve cellular energy.
In Seheult's view, suppressing ordinary fevers with medication can blunt the body's natural immune response by reducing temperature-dependent interferon upregulation, though very high fevers with severe complications still require medical treatment.
Seheult proposes hydrotherapy and thermal exposure as potential mechanisms to elevate core body temperature and induce artificial fevers that may enhance innate immune signaling.