My brother has heart diseace called widow maker, he has had 4 way by-pass, and now his right side of neck is 72% blocked, what are his odds of getting be?

The heart: Vessel disease treatment is useful, but so is rehab and changing diet that got him there, exercise, and meds to control cholesterol and triglyceridea. Associated carotid disease is fairly common, and treatment is very important at preventing stroke. Get mended, and then mend your ways to live.

Treat cholesterol: Sounds like he is getting widespread "hardening of the arteries" from cholesterol or trigyceride disease. This should be aggressively treated with appropriate medication and diet. Existing deposits can be stabilized, and studies have even shown regression in the most severe cases when treated properly. Discontinue tobacco, if used.