No doubt in my mind, dear friend!

perhaps connected with the deafness: I don't think of hearing as being "passive", but rather active *receptivity*. I think the latter is key. One cannot be receptive without first emptying, so as to allow filling...(Lots of fear could be stuck in that level).
Maybe the underweight is a consequence of 'emptying' -so as to receive- gone arwy.
(I do not think the body wants to hurt or kill us--I think it is due great appreciation for the myriad ways it works around and free of faulty input!)

How about viewing the underweight as not wanting to be "heavy" --
Positive = wanting to be "light"...there's always a positive, since we naturally all desire the good:look at the convoluted ways we try to accumulate it.


so--how about looking at weight,
*and deafness* or its 'opposite': having "ears to hear".

I tend to intuit that both these concerns are the result of it being somehow perceived as unsafe to hear--and, to be 'weighty'. To "have weight". Think of it: maybe a very elegant way to avoid persecution. when I was younger i lived with a very good timpanist--he used to speak of this or that one as being a "heavyweight" or not..meaning, filled with skill and the ability to transmit it. (or not)

PS I think the drug in utero is a red herring in this way: it's more a *resonance* that fits (echos) an earlier consequence, than actually a 'cause' -- that is to say: the causes are myriad...never mind undoing it all back to the beginningless beginning
: better to tug with compassion on one *apparent* result and trace it into the light; bomb it with love, and acceptance--so to speak. Easier said than done--I know.

just a few ideas that might be worth examining, or sleeping on...but I'd suggest go easy. No blame. anywhere. :-)