Also what does "high vegetable intake" or "Plant-based diet" mean? These can mean wildly different things to different people. For example, how many people ove

Also what does "high vegetable intake" or "Plant-based diet" mean? These can mean wildly different things to different people. For example, how many people over 100 are lifelong vegetarians? Vegans? I bet the number is extremely small (or zero in the case of vegans, a term coined in 1944), but that's what many people think of when one says "plant-based diet".