People with vitiligo can eat watermelon. Watermelon has the effects of cooling and relieving heat, eliminating irritability, quenching thirst, and promoting urination. From the perspective of Western medicine, it has a diuretic effect, similar to water, and is a fruit commonly eaten in summer. Although long-term excessive intake of vitamin C is one of the inducers of vitiligo, especially when the daily intake exceeds 1-3 grams for several consecutive months, it can induce vitiligo. Vitamin C is also an antioxidant, and it helps us clear free radicals in the body. These oxygen free radicals can damage the melanocytes in our body. Vitiligo is also caused by damage to melanocytes, reduced production or excessive loss. Therefore, some experts even use vitamin C to treat vitiligo. Thus, moderate consumption of fruits containing vitamin C, such as watermelon, has no negative impact. There is no need to avoid eating these fresh fruits entirely due to fear of potential effects.