Today show co-host Savannah Guthrie, went missing on Sunday. While Nancy Guthrie has mobility issues, Sheriff Chris Nanos said that she "is of great sound mind. This is not a dementia-related" case.'/>Nancy Guthrie is 84 and has mobility issues, but she is mentally sharp, Pima County Sheriff Chri s Nanos said. She was last seen Saturday evening. ...read more read less