There are a ton of ways to reduce your involvement in animal suffering. Even if you are not going vegetarian or vegan you can support companies that are trying to reduce cruelty on their farms (the humane society has done some great work with several companies) and even trying to go vegetarian or vegan sometimes can help (such as meatless monday). Small steps can start to make a great difference.
Click here for interview with Garth Davis, MD, author of "Proteinaholic," on how Americans have become obsessed with protein: https://www.drmcdougall.com/health/education/videos/advanced-study-weekend-experts/dr-garth-davis-obsessed-with-protein/
You'll never hear about any diseases coming from a plant-based diet. Healthy eating is still important, but even an unhealthy vegan has a much lesser impact than a healthy meat-eater. That's saying alot about the detrimental effects that eating meat/dairy has