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I would also like to find out about weight gain with celiac disease.  I was
diagnosed 2 years ago (but had it for many years). I had lost weight prior to
diagnosis. Now since changing to a gluten free lifestyle, I have gained in
excess of 50 lbs.  I take Synthroid, due to a goiter, my thyroid level is
high so I should be loosing weight, my dietician tells me I am not eating
enough, but my weight keeps going up.  The doctors just keep telling me to
eat less. I have also been eating low-fat for three months, to no avail.  In
the meantime, I go up in clothing sizes, which I can't afford.  Any answers
to this puzzle?