Researchers looked at 53 different risk factors for age-related macular degeneration (AMD). This included things people can change, such as smoking habits and diet, as well as medical conditions like diabetes and high blood pressure. The study also looked at markers in the blood, including cholesterol levels and certain nutrients.
The review found consistent links between AMD and aging, smoking, and systemic issues like hypertension. While a healthy diet and regular physical activity may offer some protection, the evidence for these specific benefits is not yet strong. Other factors, such as carotenoids and C-reactive protein, showed varying levels of connection to the condition.
It is important to note that most of the data was ranked as low or very low quality by experts. Because many of these findings are based on observational data rather than controlled trials, we cannot say for certain that these factors cause AMD. These results should be viewed as a starting point for understanding risk rather than a definitive guide for treatment.
