Im 80 years old, female, five feet six inches tall, weigh 150 pounds and have no serious health problems other than a slightly elevated cholesterol level for which I take medication.  I live alone and wonder if I should be worried if I sometimes talk to myself.
Hello! Thank you for asking on Chat Doctor! Regarding your concern, I would explain that it is quite normal to talk with yourself when you live alone. Loneliness is just a normal condition and human beings are accustomed to living in the society with each other. It is normal to need to talk to someone during the day. Being alone, you try to do it to yourself. But you have nothing to worry about, as you are very conscious of doing this. If this helps you feel better, you can continue doing this. Otherwise, I would recommend going out and try to socialize with someone (a neighbor, an old friend, in a place for old people like a bar or home care). Hope you will find this answer helpful! Best wishes,