Which lifestyle modification might reduce the risk of developing cataracts?

Using sunglasses outdoors can significantly reduce the risk of developing cataracts because prolonged exposure to ultraviolet (UV) light is a known risk factor for cataract formation. Wearing sunglasses that block 100% of UVA and UVB rays helps protect the eyes from harmful radiation, which can lead to changes in the lens of the eye over time, ultimately resulting in cataracts. This protective measure is particularly important in bright sunlight or environments with reflective surfaces, such as snow or water, where UV exposure can be intensified.

While the other lifestyle modifications mentioned may have their own health benefits, they do not directly address the specific risk factors associated with cataract development. Increased intake of dairy products, regular physical exercise, and vitamin C supplementation may contribute to overall eye health but do not provide the direct protective effect that sunglasses do against UV-related damage. Thus, using sunglasses is a practical and effective strategy specifically aimed at reducing cataract risk.