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When Beckie was an infant, she changed from a sweet, happy baby to an
irritable, cranky one after wheat was added to her diet.  She also began
vomiting (frequently projectile vomiting) --at first only 2-3 times per week,
though that increased with time.  She never experienced diarrhea--we would
have picked up on that more quickly since her father was fighting it at the
same time.  She dropped below 0% on the growth charts--didn't lose weight,
just quit gaining.