I see a Dr. every other month for a fully body check-up due to a brain tumor I had now for the last 3-5 years. he's always giving me a full body evaluation and always has nothing but positive things to say; thats including the dope, which he knows I dabble in here and htere, but more-so suboxone nowadays. same goes for Phenibut since I had to tell him EVERYTHING I as on/tried/did.
surprisingly, considering my condition the the drugs I've taken over the years, I am somewhat in good health for someone who had an 8 inch tumor on the left frontal lobe of the brain; 4 inches were removed and 4 had to stay or else my memory would be in bad, bad shape, man. this was going back 3-4 years ago and everything has been great since, so although it is surly something I still worry about, I get checked up often enough where I have a good idea how/what drugs are affecting me in which ways.
again, this may ONLY BE ME, so who knows, but I've never had a problem and I am getting MRI's and xrays often.