I think we often become more aware when we switch to a different way of eating. So we notice things more. They may have been present for years, but the change means they become intermittent, or change on some way.
For me, the absence of virtually any carbs at all (by eating meat only) has resulted in slimmer ankles, wrists and fingers, more energy which is consistently available from dawn til midnight, significantly different bathroom visits, a change in drinking habits and a change in how hunger manifests. I have never been flatulent, but (like any one) i have the odd event. Until now. They simply don’t happen any more. Unless i eat veg.
It has been fascinating.