No, the atrophied limbs is due to cervical spinal stenosis. Heavy lifting over many years can cause this as well as being born with it. I had surgery to remove 3 discs in my neck that were pinching my spinal cord. That's when I was diagnosed with the stenosis, or narrowing of the spinal canal. My triceps and outer quads are both noticeably smaller than they were say 5 years ago. And body weight and strength are the same in that span. Tommywishbone can add to this as he has the same condition.
As far as the big bellies, who knows. I'd say visceral fat from insulin abuse for years on end.