<prompt> Menkes kinky Steely hair disease occurs due to:Low copper levelsLow zinc levelsLow iron levelsLow fluoride levels  <response>: Menkes kinky hair disease- X-linked defect in intestinal absorption of copper. Mutation in ATP7A gene. Low levels of copper and ceruloplasmin. CF- Progressive cerebral degeneration, growth retardation Sparse brittle hair Scurvy-like bone changes Anemia and neutropenia Failure to thrive Pili toi, trichorrhexis and monilethrix may occur. 