Age-related macular degeneration is the #1 cause of blindness high-income societies. A recent study found that metformin use by type 2 diabetics at least 50 years old reduced the incidence of macular degeneration by ~35% over the course of five years. The authors consider their results preliminary and, as usual, recommend further study.
Macular degeneration can be difficult to reverse or treat once it takes hold. As with many illnesses, prevention is better.
Metformin is among the top drug therapies for type 2 diabetes, but it has many competitors on the rise. If macular degeneration runs in your family, this study suggests it may be a good idea to stick with metformin.
Steve Parker, M.D.
Diabetic Mediterranean Diet 