He is 77years old and often feel dizzy and when he walks, his legs become heavy for him to lift. i want to know why and what can he use or be treated?

Dizzy: Needs to be evaluated for a heart problem. Seek medical attention immediately

Don'tIgnoreAnyOfThis: Probably due to the G.O. Syndrome ('Gettin' Old). But before we jump to that conclusion we should get a full checkup with a physical exam and some tests based on that. Do this sooner than later so he doesn't fall and break a hip. If that happens he'll then be in deep doodoo Get rid of any throw carpets.He should be helped in the shower. Worsening dizziness is a worrisome sign, so get him seen soon