Hi I Am A 68 Yr Old Who Is Young

Hi
I am a 68 yr old who is young and has had cosmetic surgery 2 years ago on my face. I lost a lot of weight recently without trying so am now left with small breasts that are not shapely. I would like implants. I did see a prominent plastic surgeon in Toronto recently and his attitude was that "most women my age don't care how their breasts look". I wasn't impressed with his attitude and clearly do not want him to to it. However, I thought I would check and see if there is a reason that healthy women (I am on no medications for health reasons) and am very healthy, should not have implants?
THanks
Linda