Demented mother on death's door discontinues meds. 4 yeas later, she's happier and healthier

My demented Mother was on deaths door with weeks to live, so we figured we may as well discontinue all her meds, including stopping her statins.

That was almost 4 years ago and she is healthier and happier as a result.

I guess it's a miracle.

— Thomas P Seager, PhD (@seagertp) March 14, 2022

Americans may not realize that prescription meds are a leading cause of death in America, something like the 3rd leading cause.  Whereas vitamins don't kill.  Even in large doses, you might not like the effect, but that side effect is not death.  This site tells us that heart disease, cancer, and accidents are the leading causes of death in America, but what are the leading causes of heart disease or cancer or accidents?  What role do prescription drugs play in each of these?