Of course you can't deny those to the medicines they want. There is also a giant difference between modern mental health medicines and things like antibiotics.
As far as head of households being able to chose what they want to put in to their kids bodies, I think that is a bit f'd up to a degree. We have seen a generation of parents shove Pharma cocaine in to their kids so they will calm down and not be annoying to the parents. This causes tremendous damage to the kids in the long term and their brains often never recover. The parents are often well intentioned but misinformed, subscribe to the same intellectually lazy thinking the the first poster responded to me with: "Well, if they are doctors, surely they must know what they are talking about" rather than doing research and looking at alternative options. It's illegal to even posses cocaine in this country but totally legal to give a 7 year old adderall, which is many ways much more hardcore than coke.