Researchers Find Fatty Acid With Potential to Improve Failing Vision

What if a simple fatty acid therapy could help restore aging vision-and even rejuvenate parts of the immune system?

A new study from the University of California, Irvine, suggests that targeting specific lipids in the eye may one day reverse age-related vision decline. Published in Science Translational Medicine, the research offers a fresh approach to tackling conditions like Age-related macular degeneration (AMD), a leading cause of vision loss in older adults.

At the center of this discovery is the ELOVL2 gene, long recognized as a marker of aging. This gene plays a crucial role in producing essential fatty acids that maintain retinal health. As we age, our activity declines, leading to reduced levels of vital molecules known as very-long-chain polyunsaturated fatty acids (VLC-PUFAs), which are key for proper vision.

Instead of trying to directly boost the gene, researchers explored a different strategy: supplying the eye with the fatty acids it normally produces. In experiments on older mice, injecting a specific polyunsaturated fatty acid significantly improved visual function. Interestingly, the commonly known omega-3 fatty acid Docosahexaenoic acid (DHA) alone did not produce the same effect, highlighting that not all “healthy fats” work equally in this context.

Beyond restoring vision, the treatment appeared to reverse some molecular signs of aging in the retina. Researchers also identified genetic variations in ELOVL2 that may increase the risk of AMD, opening the door to earlier detection and more personalized treatments.

The implications may extend far beyond the eye. Early findings suggest that disruptions in lipid metabolism linked to ELOVL2 could also accelerate aging in the immune system. This raises the possibility that targeted fatty acid therapies might one day support both vision and immune health.

While these results are still limited to animal studies, they mark an important step toward rethinking how aging-related diseases could be treated—not just managed, but potentially reversed.

REFERENCE: Fangyuan Gao, Emily Tom, Cezary Rydz, William Cho, Alexander V. Kolesnikov, Yutong Sha, Anastasios Papadam, Samantha Jafari, Andrew Joseph, Ava Ahanchi, Nika Balalaei Someh Saraei, David C. Lyon, Andrzej Foik, Qing Nie, Felix Grassmann, Vladimir J. Kefalov, Dorota Skowronska-Krawczyk. Retinal polyunsaturated fatty acid supplementation reverses aging-related vision decline in mice. Science Translational Medicine, 2025; 17 (817) DOI: 10.1126/scitranslmed.ads5769