Which of the following is NOT a symptom of zinc deficiency?

Zinc deficiency is associated with several specific clinical manifestations due to its crucial role in many biological processes, including enzyme function, protein synthesis, and immune system health.

Poor wound healing occurs in zinc deficiency because zinc is vital for DNA synthesis and cell division, which are essential processes for tissue repair and healing. A deficiency hampers these processes, leading to impaired wound closure and healing.

Loss of taste and smell, often referred to as hypogeusia and hyposmia respectively, is another well-documented symptom of zinc deficiency. Zinc is important for the function of taste receptors and olfactory cells, and a lack of zinc can affect the ability to taste and smell properly.

Skin lesions are also common in individuals with zinc deficiency. Zinc plays a role in maintaining skin integrity and structure. Inadequate levels can result in dermatitis and other skin disorders, such as alopecia (hair loss).

Weight gain, however, is not typically associated with zinc deficiency. In fact, individuals with zinc deficiency often experience weight loss or failure to thrive, as zinc is essential for proper metabolism and appetite regulation. Therefore, the presence of weight gain in this context is not consistent with the known symptoms of zinc deficiency.