[Mz]

Not necessarily true. People might see you going to the office of the mental health professional, or leaving it. If the practice has no other purpose, it can be easy to infer you are getting some kind of mental health help.

If it is a touchy topic for you as an individual and/or if you live in a small town or otherwise have a situation where someone might see you, make the inference and make it into an issue, this can be a not insignificant logistical detail to deal with. Just because for you personally all would be fine by simply not mentioning it doesn't mean this is true for everyone.