What are UV levels and how can you protect yourself?
Summary
Ultraviolet (UV) radiation from the Sun helps the body make vitamin D but too much UV can harm the skin and eyes, increasing the risk of skin cancer and aging. The UV Index measures how strong the UV rays are, helping people know when to protect themselves by using sunscreen, clothing, and shade.Key Facts
- UV radiation comes from the Sun and helps the skin produce vitamin D.
- High UV exposure can damage skin cells’ DNA, causing skin cancer and aging.
- The UV Index (UVI) shows how strong UV radiation is, with higher numbers meaning more risk.
- In the UK, typical summer UV levels are around 5-6; levels above 8 are rare.
- Sunscreen with SPF 30+ and at least 4-star UVA protection is recommended, especially when UV levels are medium or higher.
- Sunscreen should be applied 30 minutes before sun exposure and reapplied every two hours or after swimming or sweating.
- Wearing protective clothing, sunglasses, and staying in shade during peak sun hours (11 am to 3 pm) helps reduce UV damage.
- Even on cloudy or windy days, UV rays can still cause skin damage.
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