<prompt> What is the daily requirement of zinc in humans ?8 mgday9.4 mgday11 mgday15 mgday  <response>: Daily requirement of Zinc for adult men is 9.4mgd and for women is 6.8mgd. RDA for zinc in males and females are 11mg and 8mg. RDA for Zinc during pregnancy is 11mgd Zinc recommendation for lactating women is 12mgd. Features of zinc deficiency in children are growth retardation, skeletal abnormalities, poor wound healing, diarrhea, skin rash and delayed sexual maturation. Ref: Advanced Nutrition and Human Metabolism By Sareen S. Gropper, Page 509 