Turning Japanese wrote:
#1,2 and 3 are probably the biggest and most important challenges for most of us as runners. Modern fruit, even in whole form, is basically another form of concentrated sugar and should be reduced or avoided for the most part. Carbs are best taken from tubers or white rice.
Vegetarian and veganism are poorly studied over long-term, but are likely inferior at least to a pescatarian diet.
Or just make sure when you eat fruit consider what you are eating it with. As long as you eat it with high fiber foods its no different than eating a non-modern fruit with less sugar. Its not that modern fruits so much more sugar, its that it has more sugar plus less fiber because we've bred the seeds completely or they are tiny, less skin or we dont eat the skin etc... So long as you are eating high fiber (which you will if you eat whole foods plant based) your sugar/fiber ratio will be good. So make a fruit smoothie with plenty of greens, chia seeds etc... to add fiber. Eat fruit as a follow up to a regular meal containing beans etc... Its not that hard honestly.