Yes, it will break down your values. Unfortunately if you have the taste of bodhicitta: the mind that wants to awaken and liberate yourself and others from suffering, then you will mostly be forced to do it. I don’t recommend meditation or Buddhism for all, it will change your life in many ways that you will consider bad from your current point of view. Less motivation for tackling stressful tasks, less romantic attachment, less hunger for new experiences, often an increased neurosis, etc.

EDIT: I find it quite horrifying that doctors prescribe it now. If you follow the doctors advice, mindfulness meditation every day, properly, then the doctor does not understand where that will take you. It is not a known thing for them. It only is “safe” because most people don’t actually bother doing it regularly or put effort in