This is the thing about drugs...when you're sick, if you can't find one that takes care of everything bothering you, you find one for this and one for that. The average person doesn't read the ingredients of the meds. They see this takes care off stuffy nose, this takes care of allergies and that takes care of headaches, not realizing some of them like the decongestant and allergy medicine have a high possibility of containing the same thing. 2-3 days of trying to get better, you feel worse, so you keep popping, not realizing that what is making you sicker is twice the amount of the same medicine in your system. That is hard on your body because you've overdosed and don't even know it.
That and this is my personal opinion, but if he, as an artist, was walking around with a cane because he needed hip surgery, but his faith doesn't believe in blood transfusion that the surgery may have required, I'm not going to believe he intentionally poisoned his own body.
That man was vegan and took immaculate care of his body, which is why he never aged a bit. They can go on with that mess!