[Fido969]

Just FYI if you check the numbers less than 10% of all deaths are autopsied in the US

I'd say this would be a circumstance where an ME would call for an autopsy. It's not just "up to the family."

[scrabblehack]

When my dad died (also overweight, 79, but hadn’t smoked in 20 years), the cops came and questioned my mom extensively.
She requested the autopsy to clear herself.

[Nifster]

And you would be incorrect.