When I was 88 years old, I gave up meat entirely and switched to a plant foods diet following a slight stroke. During the following months, I not only lost 50 pounds, but gained strength in my legs and picked up stamina. Now, at age 93, I'm on the same plant-based diet, and I still don't eat any meat or dairy products. I either swim, walk, or paddle a canoe daily and I feel the best I've felt since my heart problems began.