My 81 year old father, who is sharp as a tack, minus a little hearing, is having severe balance issues walking from room to room in his home. He was jogging on a tread mill 2 miles every 3 days when this whole thing started almost 2 years ago now. Extremely fit person. I used to tell everyone and everybody basically agreed with me, "My old man is probably going to outlive me by a long shot" He is Double Vaxed and it has got me wondering and deeply concerned. But, who can you get a straight answer out of and what can they do now that the potential damage is done? If that is even what's causing his problems..