Male sex hormones may protect lungs from asthma by boosting nerve connections https://medicalxpress.com/news/2026-08-male-sex-hormones-lungs-asthma.html Androgen signaling via sympathetic neurons regulates allergic pulmonary inflammation https://www.science.org/doi/10.1126/sciimmunol.aed0186 After puberty, asthma becomes much more common and severe in girls