I am a 45 year old female. I have notice that I speak outloud at times (generally when I am alone and thinking). The things I say out loud surprise me in that I did not mean to say them, only think them. It is generally a word or two, sometimes numbers. I speak them in a normal tone, and without strong emotion.
I noticed my speaking outloud after I had been taking Aldactone and and an ACE inhibitor for poor heart function and left bundle block. I am generally healthy and have no history of psychiatric issues. I have stopped taking the medicines because I was experiencing many side effects, perhaps related to the anti-androgen properties. My doctor was not aware of any connection between the medications and my speaking outloud. In fact, she was not familiar with my symptom at all.
My speaking outloud has not really been a problem in that I am usually alone, or when I am around others, I am at a computer and others do not seem to pay attention to the fact that I spoke. It simply bothers me because I know that I did not intend to speak outloud.