Sun exposure contributes to overall health primarily through the synthesis of vitamin D. Vitamin D is essential for bone health, immune function, and even mood regulation. Moderate sun exposure can assist in maintaining optimal vitamin D levels, which is crucial, especially in regions with limited sunlight. However, excessive exposure increases the risk of skin damage and cancer. Striking a balance between adequate sun exposure and skin protection measures, like using sunscreen, is essential for maximizing health benefits while minimizing risks.