IMO it just comes down to when you decide to take them. I mean im not saying it's a good idea for any 16 year old to go out and start loading synthetic hormones into their body. I Started at 19 years old and don't regret it but i was in a situation where getting frequent blood work wasnt a problem and had a very understanding father and doctor. Maybe i shoulda waited but other then occasional slightly elevated liver enzymes when i take orals elevated bp while on tren and test levels through the roof i havent ever had any major sides from them. No matter what age you are you should always get bloodwork done just to make sure every thing checks out.
How often should bloodword be done? I know at the very beginning before you even start, but then what, every month? And if something seems wrong within the first month, obviously you should stop but would you be able to recover easily since you've halted use early in the cycle? I'm 22 at the moment and have been debating doing a cycle for about a month now. I'm definitely finished growing so I'm not worried about that, I'm more so worried about what it will do to my overall test and HPTA being affected and not recovering correctly, even though I know what I should use for a proper PCT.