Could overeating or eating a big meal that cause belly to bulge stretch the muscle repair after Tummy tuck or cause it to fail?

Thanks for your question.  I assume it has been a few weeks since your surgery, overeating will not cause your abdominoplasty to "fail..." be careful with your eating habits because weight gain after surgery can affect the results in an unfavorable way.  Hope this helps,Dr. ResultsMiami, FL

Thank you for the question. In general, it would take a significant amount of pressure to “disrupt" the muscle repair after tummy tuck surgery. This event would likely be associated with significant discomfort. A change in your physical examination, such as increased swelling, bleeding, a new onset "bulge" would also be likely.Generally speaking, abdominal wall muscle plication performed during tummy tuck surgery is quite secure; disruption is very unusual. You will be best off following up with your plastic surgeon who will be your best resource when it comes to accurate assessment, advice, and/or meaningful reassurance.Best wishes.

You did not mention how long post surgery you are.  If you are more than a month post-op, binging will not affect your results. If you are less than one month and still taking narcotic pain pills, you will probably get constipated,and I would not recommend binging .  In either event it will not cause sretch marks on your skin.  The bloating is in your intestines, well below the skin and muscle repair of your surgery.