Thank you for your question. Being 70 years old should not limit you from having a tummy tuck surgery. The most important factor is your overall health. If you are healthy, then you should be a candidate for surgery.
If your health is good, and you are a good candidate for the procedure, then being 70 years old is not prohibitive. You'll do just as well, and likely better than some of your younger cohorts. See attached web link for a 67 year old that had a TT and flew through it no problem. In fact, she came back to have her old silicone implants revised with a mastopexy. I hope this helps and thanks for sharing.