Good to have you, here. Been doing the vegan/PB thing, coming up on 3 years.
The first change I noticed was losing 10kg without doing much very different. I've tended to walk the same average per week, for about 3.5 years, and I swapped a pretty junky omnivore diet to an (at times) very junky vegan diet. Still managed to drop the weight, which was a good start.
The extent to which it helps my T2D is to the extent to which I stick to a more structured plan, and avoid eating too much fat. Fat is something I seem to have less control over, and when it comes loaded with salt e.g cheese, it all falls apart. Not so long ago, it was very easy to avoid vegan cheese, as it was just nasty. More recently, there have been some exponential leaps in taste, texture etc. to the point where I now have to consider giving up cheese...for the 2nd time
Despite not being what I'd consider healthy for along-time, I feel noticeably better on a vegan diet. Unfortunately, as someone who suffers from depression and anxiety (and have done, going back about 25 years), I'm prone to self-sabotage. Things are definitely getting better on that front, so that's good. I've also taken the pressure off myself with regard to classifications of food as good or bad. That's not to say that there doesn't exist a spectrum regarding foods' impact on health. I've just come to realise that when I don't demonise things, or absolutely 100% rule them out, they lose a lot of their pull/sway over me.
That said, I'm really trying to get on top of saturated-fat content and salt...hence lamenting that cheese might have to go. It wouldn't be so much of an issue if v-cheese had a comparable shelf-life to dairy cheese. Unfortunately, It doesn't...AT ALL!
The emphasis/direction for me is high-carb, low-fat. And, of course, 100% vegan.
My diabetes numbers have improved on this plan (Again, when I keep it together). The numbers certainly haven't been worse. I've come down from an average of 325 FBG, this time last year, to being anywhere between 150 and 200 now, again, dependent on compliance
And i came to veganism, via the ethical position. Though I think there are huge health and environmental benefits to be had from a predominantly plant-based/plant-strong diet, I don't believe either have to be 100% to make that difference.
What has your experience been like?