I'll be 50 this year. I cycled for 3 years from 27-30, took about 2.2 years off, then cycled from 32-38. Then I stopped cold for about 9 years. In that 9 years it took about 1.5 years to feel completely normal. I didn't ever have my test levels checked but some signes told me that my systems were all firing.
1. I could have sex 3-4 times a day on occasion in my 40s
2. I could train 2x a day for months at a time in my40s
3. my squat increased past my AAS enhanced numbers
This lasted into my mid late 40s when I started to have a lot of joint pain and gain bodyfat more easily. I became carbohydrate sensitive. Sex drive was fine. So I cycles twice and then went off for 6 months and got tested. My total test was 260. So I went on TRT.
So essentially I think I recovered fine but it took over a year. Then in my mid-late 40s I went hypogonadal. A lot of men go hypogonadal in their late 40s without prior AAS use. So I really can't say if it effected me or not. I know I was fine for a goof 6+ years without anything. I'm on TRT now and it's not bad. In fact, I'm sure I out perform 98% of men over 45.