YMMV, but:
1-2 months: erections gone, breast growth starting
3-6 months: breasts taking shape a little, sexual stimulation different, body/face hair slowing but still there
6-12 months: face changed somewhat, look younger, emotions catch by surprise on occasion, total flacidness (even an attempted Viagra at the wife's insistence did nothing)
12+: several people have commented I look better, but cannot put finger on it (except longer hair, which is not why they are thinking it per their own comments), arousal is an unexpected pleasure, skin has definitely dried out somewhat and looks younger, weight gain...
and I have started fighting it, but be ready. The E is like a fat sponge.
And at my age, paranoid about negative health impacts.
BTW...I am 50.