Hormones and Immunity: The Biological Basis of 'Man Flu'

According to a report published on 2025-11-11T00:42:36+00:00, a US doctor has provided a surprising medical explanation for the long-standing 'man flu' phenomenon. Dr. Joe Whittington, a popular emergency room physician, revealed that there are genuine biological differences in how men and women's immune systems react to viral infections.

The report explains that women have a natural advantage when it comes to fighting off illnesses, thanks to the hormone estrogen. Estrogen helps boost the immune system and allows women's bodies to clear viruses more efficiently. In contrast, men's higher levels of testosterone can slightly lower their immune response, making it harder for them to fight off viral infections.

Additionally, the report states that during viral illnesses, men tend to produce more inflammatory cytokines. This means that even though their immune systems may not be as effective, men often experience harsher symptoms, including more fatigue, body aches, and overall misery. The article notes that women, through their lived experiences with periods, childbirth, and caregiving, are often more accustomed to pushing through discomfort.

While the 'man flu' has long been the subject of jokes and eye-rolls, this new medical insight suggests there may be more truth to the phenomenon than previously thought. The report concludes that the biological differences between men and women's immune responses could provide a valid explanation for why some men appear to suffer more during viral infections.