Edward Ferguson is missing from Potternewton, Leeds.
Police described him as a black male, 5ft 6, slim, grey hair, wearing grey/green jacket, flat cap and black trousers.
He has Alzheimers and diabetes and is unsteady on his feet, police said.
Anyone with information call 101 and quote ref 1188 24/12/19.
UPDATE: Edward has now been found by police.