<prompt> Selenium deficiency causes:Menkes diseaseWilsons diseaseKeshan diseaseKashinbeck disease  <response>: Ans. c Keshan disease Keshan disease is an endemic cardiomyopathy found in children and young women of Chinese regions due to dietary deficiency of selenium. Kashin beck disease: Occurs due to selenium toxicityselenosis. It is characterized by hair loss, brittle nail, garlic breath odor, rashes, myopathy and nervous system abnormality. 