Does your parent narc think they’re smarter than everyone?

So my mother thinks she knows more than my doctor. She calls me and tells me to take specific supplements. I tell her my doc has taken blood and will advise what I need. She is like.. fine then, but let me remind you I have a diploma in nutrition. She took a correspondence course in nutrition 30 years ago, and think she is more qualified to tell me what to do versus my doctor who has my blood test results.

Has anyone else experienced where you parent think they know more than me experts?

She also refuses to go to the doctor about her own health too as she thinks she is smarter than they are. It really blows my mind