Does binge eating effect tummy tuck internal sutures?

While you may not disrupt the sutures this far out, binging is not a good thing for your body.  You need proper amounts of protein and vegetables to heal wounds.  Please talk to your plastic surgeon about what is going on.  

Most likely you have not harmed your surgical repair, but it is not advisable to gain a lot of weight or subject yourself to dietary intake that results in bloating, if for no other reason than it hurts!

It is usually best to get on a regular, vigorous exercise program and exercise dietary restraint; those are the patients who have the best results.

Binge Dieting at 8 weeks should not alter your internal sutures.  It will significantly slow your wound healing however.  I do not recommend any crash diets post-operatively until you have been cleared to do so by your surgeon or you may find that your body does not have the nutrition necessary to heal properly.

is never a good idea.  Even if 2 layers of sutures were used, your vomiting places extreme pressures on your sutures that could easily pull through your tissue and result in less tightness/more roundness.   Binging is just NOT a good idea.  Please discuss your concerns with your surgeon and if necessary, see a counselor about the binging because in my book, binging is a problem.

Once six weeks has passed the sutures have pretty much done their work and the tissues have healed to 90% of the strength which they will attain. If you were to gain a lot of weight you could overwhelm any effect of your surgeon, but five pounds should make no difference.

All the best.