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cover of episode Why do we need to use sunscreen?

Why do we need to use sunscreen?

2025/6/13
logo of podcast But Why: A Podcast for Curious Kids

But Why: A Podcast for Curious Kids
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D
Dr. Jeff Yu
J
Jane Lindholm
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Dr. Jeff Yu: 晒伤是由于皮肤暴露在过多的阳光下，特别是紫外线辐射造成的。紫外线会损伤皮肤细胞，导致皮肤发红、疼痛，甚至脱皮。虽然短期内身体可以自愈，但长期反复晒伤会显著增加患皮肤癌的风险，尤其是在中老年时期。因此，保护皮肤免受阳光伤害至关重要。我的建议是，尽量避免在阳光最强烈的时段（上午10点到下午4点）直接暴露在阳光下，寻找阴凉处。同时，无论何时外出，都应该涂抹防晒霜，并穿着长袖衣物、帽子等防护用品。记住，预防胜于治疗，从小养成良好的防晒习惯，可以大大降低未来患皮肤癌的风险。

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A sunburn is caused by ultraviolet (UV) light damaging the skin's top cells. While the body heals, repeated sunburns increase skin cancer risk later in life. People with darker skin have more natural protection.
  • Sunburns damage skin cells.
  • Repeated sunburns increase skin cancer risk.
  • Darker skin offers more natural UV protection.

Shownotes Transcript

It’s summer and that means slathering yourself with sunblock before you’re allowed to go run around outside. Not everyone loves that ritual: sunscreen can be cold or sticky. Sometimes it gets in your eyes, and it always feels like it’s time to reapply JUST as you’re about to jump in the water or go kick the ball. So, what’s the deal? Is it really all that important? We get the scoop from Dr. Jeff Yu, a pediatric dermatologist at Massachusetts General Hospital. He’ll help us understand: What is a sunburn? What’s a tan? How does sunscreen work? How do you protect your eyes?

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