It is pretty simple and straight forward to show the connection between obesity and heart attack. Again, I am not saying it will be 100% case, but this will apply to most of the cases that I have seen.
Step 1: Starting
We have all the junk foods surrounding us - you know what type of foods I am referring to.
Taking high calories foods without exercise = obese.
Step 2: Building
You will notice the building of your bad cholesterol in the blood streams due to the food that you take.
The bad cholesterol will then slowly stick to your blood vessels and form plaque. Just imagine your blood vessels are like drainage, and bad cholesterol is the rubbish.
Step 3: Explode
You have everything ready for getting yourself in heart attack - heavy weight which causes your heart to work extra hard, blockage in few of your primary arteries. Is just the matter of time now.
