Yeah, that's what I was referring to as short term - hours to a day. The linked YouTube video is a year. If a cis-man was to take a similar dose (and thus say,

Yeah, that's what I was referring to as short term - hours to a day. The linked YouTube video is a year. If a cis-man was to take a similar dose (and thus say, have double physiological T levels) they would certainly not notice their voice changing the next days. Most transgender medicine protocols target physiological levels of the hormones for the desired gender. It gets a bit more complicated with transwomen, because women have a tremendous range of variation during each cycle (never mind pregnancy), and because high estrogen levels can suppress testosterone on their own (so you don't need a separate medication to do that)... so there are different schools of thought as to the best way to do it. Targeting physiological levels is done mostly because that seems like a good idea a priori. One of the joys of being transgender is being part of an ongoing science experiment.