Had breast reconstruction. I am get afraid if I loose weight the fat graft will change, how much wight loss would affect that ?

Hello and thank you for sharing. I understand your concerns and it is true that weight loss can affect your fat grafting to the breasts. However, it would need to be a substantial amount of weight to have any real impact. I encourage you to share your worries with your plastic surgeon, who can visit with you in person and help you determine how much weight loss might alter the results of your breast reconstruction. You may also discuss what avenues you have available should changes occur that you might want to correct in the future. Good luck!

Dear drgole123,
Once fat grafts have engrafted they will fluctuate with weight gain and loss.  In general modest weight changes (up or down 20 lbs) will not significantly effect the fat grafts.  Very significant weight changes (up or down 50 lbs) can have a more conspicuous effect.
Hope that this helps.