One of the most prominent signs of zinc deficiency is loss of taste or smell which was also a major symptom during the Delta variant led COVID infection wave. However this symptom was not seen during the Omicron wave.
Other signs that hint towards the presence of less zinc in the body are: poor appetite, depressed mood, lower immunity, delay in wound healing, hair loss, and diarrhea.
As per a study, in more severe cases, zinc deficiency leads to delayed sexual maturation, impotence, hypogonadism in males, and eye and skin lesions. In many cases it can cause unexplained weight loss and mental lethargy as well.
People who experience blurry vision without any specific reason can check for zinc deficiency. Eyes are said to have high concentration of zinc and when the mineral is less in quantity it alters the vision. Zinc is said to be involved in the formation of visual pigments in the retina.