Beyond hair loss and slow wound healing, zinc deficiency can also lead to altered taste, digestive issues, tinnitus, and reduced concentration.

Persistent numbness, tingling, cold hands and feet, or slow-healing wounds may indicate poor blood circulation or deficiencies in nutrients such as iron, zinc, and vitamin B12.

Minh Anh, 14, was diagnosed with obesity but lacked essential nutrients because her family overfed her and gave her high-energy milk, fearing she was malnourished.