What role does Progesteron play in longevity?

Progesterone is a steroid hormone primarily known for its role in female reproduction, but it has also garnered interest in longevity research. Mechanistic studies suggest progesterone possesses anti-inflammatory, neuroprotective, and antioxidant properties that could counteract age-related decline. It modulates immune function, supports myelin repair, and influences glucose metabolism. Some animal studies report lifespan extension with progesterone treatment, but human evidence is limited and conflicting. Observational data from hormone replacement therapy (HRT) in postmenopausal women show mixed results: while combined estrogen-progesterone therapy affects cardiovascular risk, the isolated effect of progesterone on all-cause mortality remains unclear. The type of progesterone (natural vs. synthetic) and dosage further complicate interpretation. Overall, the evidence is primarily mechanistic and preclinical. No robust human trials confirm a causal role of progesterone in extending lifespan. Therefore, any longevity claims are speculative. Individuals considering progesterone for anti-aging purposes should consult a healthcare provider, especially given potential risks (e.g., hormone-sensitive cancers). In summary, progesterone has intriguing biological plausibility but lacks sufficient evidence to support a direct role in human longevity.