Patient: ...too much is bad for you.

Doctor: Well of course too much is bad for you, that's what "too much" means, you blithering twat. If you had too much water, it would be bad for you, wouldn't it? "Too much" precisely means that quantity which is excessive, that's what it means. Could you ever say "too much water is good for you"? I mean if it's too much it's too much. Too much of anything is too much. Obviously. Jesus.