Great question. I haven't seen any data on this, but I bet it varies greatly depending on the diet and lifestyle changes you make post surgery to promote heart health. I recommend discussing with your physician to get his/her input.
Here is a link to a patient guide that may be worth scanning to see if it mentions this - Bypass Surgery Patient Guide.
All the best,
Lisa Nelson RD
How to Lower Cholesterol in 8 Simple Steps
does it matter how old u are to get a bypass
try this link