Lonesome,
I am in your same boat- heart conditions - but love the bad foods - it is so hard to eat healthy all the time - or even 1/2 the time for that matter!
I would have to assume there are certain chemicals in the "taste good" but bad for you foods that make your brain want more more more - just like nicotine!
I believe if studies were done for obesity - like they are for tobacco and cancer - something along those lines would surface.
I think that - YES - you can be addicted to unhealthy junk foods!
RIP - Yamahondaman!! You will never be forgotten!
RIP - Sam Brehm!! Gone but NEVER forgotten!
RIP - Sandpuppi101 - You will live on in my mind - I miss you friend!