What harm does ultraviolet light do to the human body?

I believe that everyone likes to bask in the sun. In fact, it is quite good to bask in the sun appropriately. Especially in winter, when the weather is cold, sunbathing can help keep you warm. However, sunbathing also requires a degree. If the sun is shining brightly in the hot summer, it will be different. Under severe exposure, ultraviolet rays will cause certain harm to people. The ultraviolet radiation is very high, so what harm does ultraviolet rays do to the human body? Let’s take a look below.

When ultraviolet rays act strongly on the skin, photodermatitis may occur, causing erythema, itching, blisters, edema, etc.; in severe cases, it may also cause skin cancer.

Ultraviolet rays act on the central nervous system and can cause headaches, dizziness, increased body temperature, etc. It can cause conjunctivitis and keratitis in the eyes, which is called photoconjunctivitis. It may also induce cataracts. The ultraviolet rays generated during the welding process can cause welders to suffer from photoelectric conjunctivitis (which can be cured).

When the ultraviolet rays are the weakest (level 0-2), they will not have much effect on the human body, so you can just wear a sun hat when going out; when the ultraviolet rays reach level 3-4, in addition to wearing a sun hat, you need to bring sunglasses and apply sunscreen on your body to avoid the harm of solar radiation to your skin; when the ultraviolet intensity reaches level 5-6, you must walk in the shade when going out; when the ultraviolet rays reach level 7-9, it is best not to go to the beach to sunbathe between 10 am and 4 pm; when the UV index is greater than or equal to 10, you should try to avoid going out, because the ultraviolet radiation at this time is extremely harmful.

To sum up the harm of ultraviolet rays to health:

1. Decreased immune function

2. Deep damage to genetic factors

3. Increased risk of skin cancer and cataracts

4. The incidence of pigmented cancer on the back, hands and feet increases

5. Causes skin dullness, aging, spots and wrinkles

6. Increased precancerous lesions of actinic keratosis

In general, the harm of ultraviolet rays to the human body is that ultraviolet rays can harm human health and are very detrimental to human growth. Therefore, I hope everyone will pay attention to the problem of ultraviolet rays and prevent excessive exposure to ultraviolet radiation. Especially in today's advanced social environment, with many radiation devices, we must pay special attention.