My guy is a good eater when it is applesauce and rice!  So I am not sure if his refusal to eat is an age thing (they seem to like to assert their independence at this age -  my older son was kind of the same way)...........  but Johnny did "gag" a lot on food-  never sure why, but he did.  We kept him on stage 2 and 3 foods for a long time.  Johnny does refuse to eat when he is teething-  drinks fine but refuses to eat-  well he will eat ice cream (who won’t?!)  But I can tell you I am pretty darn sure that even though Johnny’s "levels" were OKAY according to the doc, that the vomiting was associated to his sodium intake.  We have always used table salt-  Johnny didn’t respond well to the sodium chloride the docs had originally prescribed-  it made him gag and vomit-  so the endo told us how much non-iodized salt to give him on a daily basis and all was well until he told us we could decrease and then stop the supplementation-  that was when the volcano began.  I will tell you that I dreaded meal time because I just knew I would have a mess to clean up and then have to redose the meds.  If you want to talk further, you can email me.......  gwen_tom (at)comcast(dot)net. 

But the increase in table salt (we give him about 1/8 of teaspoon @ every meal) seemed to the trick.