Hi, I am trying to find out why my 72 year old mother makes a humming sound out loud. It’s not a humming to a song etc… like I’ve read online. It’s more of a direct hum sound in 5-10 seconds intervals. She will do it while watching TV, playing solitaire on the computer or talking. It can be distracting but she is my mother and I love her the way she is. She will stop from time to time but then starts again. I am curious if she is aware of this. I have been noticing this in the last several months. I never heard her do this in the past or when I was younger. I have read that it could be early signs of dementia. Is this true? She does have some health issues but she’s able bound and has a keen mind and she’s physically active. She does have a lung problem but no need for oxygen. I don’t think this could be related since it’s not a sound as though she is out of breath or having difficulty breathing, it’s just a moan sound. Any suggestions? Karen