The risk of glaucoma, the second leading cause of blindness, appears to be dramatically reduced by kale or collard greens consumption, thanks to the phytonutrient pigments lutein and zeaxanthin.
A healthy diet may not only prevent the complications of diabetes, but also reduce the risk of age-related macular degeneration, another common cause of blindness.
Many of the most powerful drugs in modern medicine's arsenal came from natural products, from penicillin to the chemotherapy agents Taxol® and vincristine.