Everything about 'UV rays' that cannot be avoided even during the rainy season
2024.07.04 10:54
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What are the beneficial effects of ultraviolet rays?
Ultraviolet rays promote the production of important vitamin D for human health. Vitamin D helps the body absorb calcium and phosphorus from food and promotes bone development. The World Health Organization (WHO) recommends exposure to sunlight for 5 to 15 minutes, 2 to 3 times a week. Additionally, artificial ultraviolet light is used to treat certain diseases (such as rickets, psoriasis, eczema, vitiligo, lupus, etc.) that do not respond to other treatments.
Excessive short-term exposure to ultraviolet rays can cause sunburn, tanning, and sun allergy. Prolonged exposure can lead to degenerative changes in skin cells, connective tissue, and blood vessels, resulting in premature aging and skin cancer (non-melanoma skin cancer and malignant melanoma).
What is the effect of ultraviolet rays on the eyes?
Acute effects of UV exposure include photokeratitis and photoconjunctivitis, which are very painful but reversible. Chronic exposure can lead to cataracts, pterygium, and cancers of the eye and surrounding areas (basal cell carcinoma, squamous cell carcinoma, and melanoma). Additionally, UV exposure is associated with the development of age-related macular degeneration (AMD).
The effect of ultraviolet rays on the immune system
Ultraviolet exposure can alter the activity and distribution of certain cells that trigger the human immune response. As a result, the risk of infection may increase or the body's defense against skin cancer may decrease. Ultraviolet exposure also increases the occurrence of cold sores.
Effects of UV rays according to skin color
People with darker skin tones are generally at lower risk of developing melanoma or non-melanoma skin cancers, but regardless of skin color, there is still a risk of eye damage and immune system effects. Therefore, everyone should be cautious about sun exposure. Ultraviolet rays play an important role in health, but excessive exposure without proper protection can lead to serious health problems. Prevention and appropriate protection are necessary.
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Comments 8
- sun flower
자외선이 무조건 나쁜건 아니지요. 과하지 않는다면 무엇이든지 일장일단이 있는듯 해요.
- 토끼7
자외선피하는개 상책이지요
- 박효정
어느 정도는 노출되어야 좋은 것 같기도 해요~ㅎ 너무 강한 자외선은 피하는게 상책이지요
- 감사와행복
자외선이 강한 요즘은 선크림 꼼꼼하게 바르는게 좋지요 햇볕이 강하지않을때는 잠시 햇볕 쬐는것도 괜찮은듯 싶어요
- 머랭이
자외선 이 너무 나쁘기만한건아니네요 하지만 너무 노출되면안되니까 잘 관리하자구요
- bi
자외선에 유익한 효과도 있군요 과하지 않은 적당한 자외선이 중요하겠네요
- 아침햇살77
와우... 자외선.. 좋은 정보네요.
