10 Signs You Are ZINC Deficient

People with zinc deficiency may also experience:
hair loss
changes in their nails
diarrhoea
more infections
feeling irritable
loss of appetite
impotence
eye problems
weight loss
wounds that take a long time to heal
lack of taste and smell
Zinc deficiency can slow a child’s growth and delay them reaching sexual maturity. Zinc can also be obtained from some multi-vitamin supplements or cold remedies that contain zinc.
It’s important to follow your doctor’s or pharmacist’s recommendations, as having too much zinc can lead to diarrhoea or vomiting, and can interfere with other nutrients you need such as copper and iron. You should not take more than 40mg of extra zinc a day, unless your doctor tells you to.
https://www.healthdirect.gov.au/zinc-deficiency