My credentials are much less impressive - I have been vegan since March this year, before that, I was eating meat and eggs at every meal.
In the short time since March, I have been pretty dedicated and studied a lot on veganism. My personality is like that, once I decide to go on a path I try to learn everything that I can about it. With veganism, it is a bit silly to 'have to study it' because it is how we should be instinctively eating (if society and its flaws weren't in the way).
Only one thing I could not get behind: the statement that sugar is bad for your health, I mean Dr Kempner treated patients for decades using rice, fruits and sugar for afflictions like diabetes, obesity, heart disease., hypertension.
"White sugar may be used as desired (ad libitum); on average a patient takes in about 100 grams daily (400 calories) but, if necessary (to maintain body weight), as much as 500 grams (2000 calories) daily has been used"