Urolithin A (Mitopure) Deep Dive: Mitophagy, Muscle, Immune Support, and Skin “Inside-Out” Benefits: Jen Shineman, director of science communications at Timeline, discusses Urolithin A (Mitopure), a postbiotic made by gut microbes from ellagitannins in foods like pomegranates, berries, and nuts, but often not produced in sufficient amounts, making supplementation useful. They discuss its primary mechanism—supporting mitochondrial recycling via mitophagy—and how this may influence hallmarks of aging, including inflammaging and immune aging, citing human findings on improved immune markers (e.g., CD8 T cells) and reduced inflammation. They review emerging preclinical research in heart failure with preserved ejection fraction, atherosclerosis plaque stability, and brain health, including studies underway to confirm blood-brain barrier penetration. They also cover topical Urolithin A skin research showing penetration, improved collagen-related gene expression, reduced UV-related inflammation, and visible wrinkle improvements, plus discussion of gut inflammation pathways and dosing (500–1000 mg) and evidence for muscle endurance/strength and recovery.