What does Honto Kai mo good for you janai inee mean?

"Honto Kai mo good for you janai inee" is a mix of Japanese and English that can be roughly translated to "Isn't it really not good for you?" In this phrase, "honto" means "really," "kai" can refer to a question or inquiry, "good for you" is in English, and "janai" indicates negation in Japanese. The phrase expresses concern or disbelief about something being beneficial.