Lancet July 2026 Temporal changes in cortisol secretion and their association with long-term outcomes in benign adrenal incidentalomas: a retrospective cohort study.

This study investigates the long-term health implications of mild autonomous cortisol secretion (MACS) in patients who have discovered unexpected, non-cancerous growths on their adrenal glands. By tracking hormone levels over several years, researchers found that nearly a quarter of patients experience fluctuating cortisol results, suggesting that a single test may not capture a person's full health profile. The data reveals that individuals with persistently elevated cortisol levels face a higher risk of worsening hypertension and a greater overall cardiometabolic burden compared to those with normal hormone function. Ultimately, the research highlights that while high cortisol correlates with poorer outcomes, these risks are heavily influenced by age and existing cardiovascular factors, necessitating a proactive approach to managing modifiable health risks in these patients.