You’re spot on. I’ve done 4 cycles with Deca included and even on a 200mg a week cycle cycle my hair fell out noticeably. I used finastride halfway through the first cycle, but I ended up switching to dutasteride for the others and even then my head itched like crazy and hair kept thinning.That's likely because you where prone and DHT secretions causes hair loss.
Adding additional hormones into your body can induce higger production of DHT of course, would have been wise to take something like finastride once you started noticing alot hair loss.
Other than that one downside it was awesome for putting on size and mentally I felt fantastic.
On Tren A + Test P taken daily, I was my leanest, strongest and heaviest I’d ever been. but I felt exhausted almost the entire time and I’d be yawning mid work out. Also my hair fell out worse than anything on Tren.