Sun exposure: Balancing health benefits with skin cancer risks

Sun exposure presents a complex balance between health benefits and significant risks. Moderate sunlight is essential for vitamin D production, regulating sleep through melatonin and cortisol, and supporting immune function and mood. However, excessive exposure increases the risk of sunburn, premature aging, and skin cancers, including melanoma.

Experts emphasize that sun protection is not a standalone solution. Common misconceptions suggest that sunscreen alone is sufficient, but most individuals fail to apply the necessary amount to achieve the labeled SPF. Effective protection requires a combination of sunscreen, seeking shade—particularly between 10:00 and 14:00—and wearing UV-protective clothing.

Regarding safety, scientific evidence does not support claims that chemical sunscreens are inherently dangerous or cause hormonal disruption due to absorption into the bloodstream. To manage risks, individuals should monitor the UV index and tailor exposure based on skin type, age, and season, noting that those with darker skin may require more time to produce adequate vitamin D.