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Physical exercise and immunity: allies or adversaries?
23 septembre 2025
By Ana Espino | Published on september 23, 2025 | 3 min read
#PublicHealth #Immunity #PhysicalActivity #ImmuneSystem
The immune system is the body’s first line of defense against pathogens, whether bacteria, viruses, or tumor cells. Its proper functioning depends on many factors, including age, stress, nutrition, sleep… and physical activity, whose effects on immunity are generating growing interest.
While it is well known that moderate exercise stimulates natural defenses, the effects of intense and prolonged efforts remain controversial. Some studies suggest a temporary period of immunosuppression, while others dispute this effect. Moreover, immune responses may vary according to age, sex, health status, or athletic background.
#PublicHealth #Immunity #PhysicalActivity #ImmuneSystem
The immune system is the body’s first line of defense against pathogens, whether bacteria, viruses, or tumor cells. Its proper functioning depends on many factors, including age, stress, nutrition, sleep… and physical activity, whose effects on immunity are generating growing interest.
While it is well known that moderate exercise stimulates natural defenses, the effects of intense and prolonged efforts remain controversial. Some studies suggest a temporary period of immunosuppression, while others dispute this effect. Moreover, immune responses may vary according to age, sex, health status, or athletic background.
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Scientific reference
Oniz, M. (2025). Effect of Exercise on Immune System. Journal of Exercise Science & Physical Activity Reviews, 3(1), 1-12
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