I'm happy to hear that your results are still great 5 years after your tummy tuck! If you gain weight, the fat will be distributed where it usually goes. So, for example, if you found that your thighs and hips tended to show the signs of weight gain before your tummy tuck, that will continue to be the same now, after your tummy tuck. If you found that your midsection showed weight gain the most before your tummy tuck, then this will be the same now.Also, do you have a naturally small frame or larger? 10-15 pounds may adversely affect your tummy tuck if you have a smaller frame, in that it can cause a minor pouch to develop. However, it may not be so noticeable if you have a larger frame.The most important thing to know is that big weight fluctuations can really impact your tummy tuck results. It's better to maintain a stable weight in order to prolong your results.I actually find that after about a year, if liposuction was done at the same time, then the liposuctioned areas are more resistant to weight gain than before the surgery. Since I almost always use liposuction with my tummy tucks, the tummy is also more resistant to weight gain. Why? Because the number of fat cells have been reduced.