That's the only way to lower rbi's, hematocrit, and hemoglobin. Supps can help a little but when it comes down to it, you have to get some of the blood out.
Clotting disorders normally start to show around 30's, and you can get checked to see if you have one. If not it's best to still take precautions but they typically play a role in strokes related to AAS use. You can get rbc, hemo, hemato tested fairly cheap.
You really want to keep bp under control even if that means taking meds. I will occasionally use Microzide if I can't control bp from diet and supps. And same with cholesterol, niacin works well.
These are really the major sides to AAS use that everyone should be concerned with, mores then acne and hairloss. I would not want those either but AAS can be used safely if you get labs and keep up with these things. You can get online and find supps cheap but keep in mind that certain ones are highly oxidative and have low absorption rates so check into what you are using.