Foreign Affairs

There's only a certain number of Big Macs you can eat until your arteries are completely blocked. He's already exhibiting symptoms of dementia:

Cognitive Changes:

Memory loss, often noticed by someone else.
Difficulty communicating or finding words.
Problems with reasoning or problem-solving.
Difficulty performing complex tasks.
Trouble with planning and organizing.
Poor coordination and control of movements. (dancing)
Confusion and disorientation.

Personality changes:

Depression.
Anxiety.
Agitation. (vindictiveness)
Inappropriate behavior.
Paranoia (being suspicious).
Hallucinations (seeing things that aren't there).

By the end of his fourth year he'll be a drooling fool.