A Swiss biotech study found only about 40% of people can convert pomegranate compounds into urolithin A, a molecule linked to anti-aging. The difference lies in specific gut bacteria, not the fruit itself.
Urolithin A triggers mitophagy, clearing worn-out mitochondria. Clinical trials show it improves muscle endurance in older adults. However, most people lack the necessary gut microbes, like Gordonibacter urolithinfaciens, to produce it.
Researchers categorize people into three metabotypes. Metabotype A produces urolithin A; Metabotype 0 produces none. This group grows with age, meaning those who could benefit most often cannot produce the molecule.
The gut microbiome is shaped by factors like antibiotics and diet. A diet low in fiber can starve the necessary bacteria. A 2024 study further showed gut composition affects nutrient absorption broadly.
Amazentis now sells a direct urolithin A supplement, Mitopure. For others, a high-fibre diet might help shift metabotype over time. The core lesson: the health impact of many foods depends entirely on an individual's unique gut microbiome.