The causes of alopecia areata are numerous, including reduced immunity, long-term consumption of spicy and irritating foods, frequent anxiety and stress, poor mood, or prolonged lack of nutrition. For milder cases of alopecia areata, hair can usually regrow within 1 to 3 months through self-adjustment of diet and lifestyle habits, along with increased exercise. However, for more severe cases, where hair loss covers a larger area, in addition to standard medical treatments, enhancing exercise, strengthening immunity, consuming more vegetables and fruits, and diversifying the diet are recommended. Typically, one treatment cycle lasts at least 3 months, and for severe symptoms, treatment may be needed for half a year or even longer. Persistence is crucial in managing this condition.