I don't have much nipple sensation but I never had much nipple sensation, don't know why, but binding for 6 years hasn't changed that at all.
For me, I had barely any dysphoria for a while, but it slowly ramped up for a couple of years. I felt better binding but I didn't feel bad without it. I felt better being gendered male but I didn't feel too bad if I didn't. For me it slowly ramped up though and at the point where I finally started T and came out, I wasn't suicidal by any means, but I could see that if I let myself continue, it would eventually reach that point because it was getting worse every time I had a depressive episode. But the point is that they weren't there yet. Everyone experiences dysphoria differently, and if something might make you even a slight bit happier, it's worth considering
I can understand you on the asthma. I have exercise-induced asthma so in my normal day to day it doesn't affect me, but then it does flare up BADLY at inconvenient times such as climbing flights of stairs or my newer job that involves some heavy lifting at times. It ultimately is a large contributing factor to my urgency for top surgery now, because the asthma is just so hard to deal with after 3 years of consistent binding and 3 more before that of more occassional. Binding long term does cause physical problems and it's good to be aware of so that when the time comes, you can decide if you'd rather stop binding or get surgery. If your end goal is never surgery, then being mindful of when and how much you bind can go a long way. Limiting to short periods, not binding every single day, and wearing a looser binder may all be things that could help you stay healthy while binding.
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