I’ve done A LOT of reading on TRT and I don’t believe I’ve ever come across any research on that topic…interested to hear if anyone else has anything. I suppose you could compare response to TR of obese to normal weight or type II DM to nondiabetics but haven’t come across this yet.
Good question. I have been on TRT for a little over a year, and have taken Vyvanse for more than two years. I use the VYV mon-thur, and vary between 20-60mg per day (depending on the day). As with any speed, I noticed that it ups my sex drive, but puts a bit of a hurtin on my wood. No nocturnal erections M-TH and no morning wood. I had read that vyvanse will lower your T over time. Fast forward to TRT, nocturnal and morning wood to spare, and no need for the V (although even recreational usage is fun). So, in my experience lifestyle choices are mitigated somewhat by the exo t.