A few days ago, during a routine eye exam, my optometrist exclaimed how the blood vessels and surface of my retina contained features typically only seen in young people under the age of 30. She found this remarkable because I am in my mid-60's. This finding was mentioned to a family member whose response was that it must be attributed to all the veggies I eat.
I would like to point out that while that is certainly true, it is even more attributable to what I DO NOT eat. I say that because as healthy as whole, unprocessed fruits and vegetables are, they simply cannot compete with the damage inflicted by animal proteins and fats. In other words; you can't consume animal products and expect adding some fruits and veggies to protect against the damage.
Interesting to note that I eliminated all animal products from my diet during my 30's.