Helibee - well said.
She's great, but stuff like this really gets my back up.
Her adult teeth are great so far, but she's had to have braces, but sure that's something she might have needed anyway. She's paranoid about teeth cleaning, and has an incredibly healthy diet, helps that it's "cool" to drink water, she gets bottles of water when other kids get bottles of fizzy stuff.
But when you've had a child hospitalized because they aren't gaining weight, had to have all sorts of nasty invasive tests, stuff like what LOTM is saying really makes me cross.
Unless you've lived it, you truly cannot understand. She couldn't even have a digestive. Or a piece of scone if we were out. Or sausages at a BBQ. Truly very difficult to live with - especially when she got bigger and realised that she wasn't getting the same as the other kids if we were out - no ice creams at the beach for example.
She is incredibly sporty and you definitely would never know the start she had to look at her 
Hope all is well for your DS.