<prompt> Siuins are associated withMemoryVisionMetabolismOlfaction  <response>: Siuins are a family of proteins that play a role in aging by regulating cellular health. Theyre responsible for critical biological functions like DNA expression and aspects of aging. However, siuins can only function in the presence of NAD, nicotinamide adenine dinucleotide, a coenzyme found in all living cells Ref: guyton and hall textbook of medical physiology 12 edition page number:534,535,536 