 The leading cause of blindness and vision loss is cataracts. One of the most common surgeries performed today. We know smoking can increase risk, long-term radiation exposure. What about diet? A study more than 25,000 people with a wide range of diets was recently published. They compared what they called high meat-eaters to moderate meat-eaters to low meat-eaters versus those who ate fish, but no other meat versus those eating vegetarian versus those eating vegan. The researchers went out of their way to choose health-conscious subjects so they could factor out smoking, exercise, other non-diet variables, and so the so-called high meat-consuming group 100 grams a day. That's like one serving in one meal a day. In the US, we may average close to 330 grams a day. So it's like reverse Starbucks labeling. You know how they're small as a tall? Well here, their high meat group is really quite low by American standards, yet they still found a highly significant trend. Who do you think had the lowest risk of cataracts? Compared with the quote-unquote high meat group, cutting back on meat cuts down your risk about 15%. Just do fish you down 21%, no fish, 30% drop in risk, and then no eggs and dairy for the full 40% drop in risk. Overall, compared with meat-eaters who consumed 100 grams of meat and meat products a day, fish-eaters, vegetarians, and vegans had approximately 20%, 30%, and 40% lower risk of cataract, respectively. It's like with diabetes risk. There appears to be a step-wise reduction, a progressive decrease in risk in parallel with the decrease in the amount of meat and other animal products in the diet.