Finally, thin, and relatives will not accept. What to do?

Few years could not achieve reduction kilograms.I was not full, but the figure I did not like.Now, finally got to lose weight (from 57 to 52 kg), but her parents and sisters are trying to feed me, keep talking, I became too thin and so on.

Situation aggravates the fact that I lost weight not by dieting (pick whichI did not work), but as a result of the disease.

Me my figure is now satisfied.How to resolve the issue with the kinsfolk, so that they were not eager to fatten me and gave freedom to be what I like?