Stay safe from harm UV (ultraviolet) rays from the sun should always be a priority,especially in the summer months.
UV rays can cause carcinomas – which are other forms of skin cancer – sunburn, photoaging or cortical cataracts, an eye disease that causes the lens to become progressively more opaque, eventually causing blindness.
“The sharp increase in incidence of skin cancer in light-skinned populations worldwide is closely linked to excessive exposure to ultraviolet radiation from the sun,” says the World Health Association.
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UV Index: the key data to take care of your health this summer 2025
“Current evidence indicates that personal sun exposure habits are the single most vital risk factor for damage caused by ultraviolet radiation.“adds the WHO.
to prevent health problems, there is the UV Index, developed by the WHO, the United Nations Surroundings Program, the World Meteorological Organization and the International Commission on Non-Ionizing Radiation Protection.
the UV Index is a score ranging from 0 to 11 and measures the intensity of sunlight during the day, indicating the likelihood of sunburn and how quickly it occurs.
The ozone layer, responsible for filtering the sun’s UV rays, will not be recovered before 2050
Ultraviolet radiation is a component of solar radiation and is filtered into the ozone layer when sunlight passes through the atmosphere.
But the ozone layer it is indeed being destroyed for decades from man-made chemicals released into the atmosphere and will continue until the use of chlorine and bromine compounds is drastically reduced.
International agreements, notably the Montreal Protocol, have helped phase out the production of ozone-depleting substances.
But the long shelf life of the chemicals already released will mean that ozone depletion problems will persist for many years. The scientists They don’t expect a full recovery ozone level until 2050.
If the average temperature increased by more than 1.5ºC, the consequences would be “irreversible”, according to a study
As the ozone layer is depleted, the protective activity of the atmospheric filter is reduced and MORE UV radiation, especially UVB, is more harmful to health.
In 2023, the ozone hole over the Antarctic continent reached a size of 26 million square kilometers and scientists say this has supported ozone depletion and increased UV radiation levels on Earth will aggravate the effects of UV rays on
Ultraviolet radiation levels vary primarily with the height of the sun in the sky. In mid-latitudes they are highest during the summer months,during the 4-hour period around solar noon,when the sun’s rays take the most direct path to Earth.
The WHO explains that UV levels are highest in clear skies. Cloud cover generally reduces a person’s exposure, but thin clouds have little effect and can even increase UV levels due to scattering.
In this context, children are particularly at high risk of suffering damage resulting from exposure to UV rays such as burns and skin cancer, as well as premature skin aging.
Additionally, overexposure to UV rays can led to inflammation of the cornea and conjunctiva in the eyeand cause or accelerate the progress of cataracts.
Furthermore, there is growing concern that UV radiation may reduce the effectiveness of the human immune system and, therefore, that sun exposure may increase infection risks and limit the effectiveness of immunization against disease.
As reported by the WHO, the risk of other UV-related health effects, such as eye damage, premature skin aging and immunosuppression, is autonomous of skin type.
He also adds it the incidence of several types of skin cancer has increased dramatically in recent decades, but added that while most cases are due to depletion of the ozone layer and increased levels of ultraviolet rays, the main cause of rising cancer rates is changing human behavior.
“Increased outdoor activities and changes in tanning habits frequently enough lead to excessive UV exposure. Greater awareness and lifestyle changes are urgently needed to change current trends“warned the organization.
The rating does not measure how hot it will be, but rather what will be the intensity of UV rays of the sun at different times of the dayallowing people to take steps to protect thier skin from sun damage and burns.
The UV index starts at zero, which would be the middle of the night when it is dark, and goes up to 11, which is described as extreme.
A level of UVs greater than 7 or 8 are considered very highwhich means you are more likely to get sunburnt.
a score 3 to 5 indicates that the level of protection is more important. Experts recommend using sunscreen at this level, and you should use caution when spending time outdoors during the middle of the day.
the risk of sunburn increases with a score of 6 to 7 and it is advisable to seek shade during the central hours of the day, cover up and apply sunscreen.
a score 8 to 10 is considered high UV exposure and it is essential to cover yourself with clothing, hat and sun cream. It is indeed also recommended to seek shade between 11am and 3pm.
A UV level of 11 represents the highest risk of sunburn, and experts recommend staying indoors.
– How can individuals effectively check the UV Index before outdoor activities?
Interview Between the Time.news Editor and Dr. Sarah Collins, Dermatology and Environmental Health Expert
Editor: Good afternoon, Dr. Collins. Thank you for joining us today to discuss the critical issues surrounding UV radiation and its effects on our health, especially as we approach the summer months.
Dr. Collins: Thank you for having me! Its a pleasure to discuss such an significant topic.
Editor: To start, can you tell us why UV radiation is especially concerning during the summer?
Dr.Collins: Absolutely. In the summer, the sun’s rays are more direct and intense. This means that UV radiation, which is responsible for many skin issues, including sunburn and various forms of skin cancer, is at its peak. It’s crucial for everyone, especially those with lighter skin, to take precautions against excessive exposure.
Editor: The article mentions a sharp increase in skin cancer among light-skinned populations. How significant is this trend?
Dr. Collins: It’s quite alarming. The World Health Institution has linked this rise directly to increased UV exposure. With more people going outdoors for leisure or work, the risk of developing skin carcinomas has escalated. It’s vital that we educate the public on protective measures.
Editor: Speaking of protection,can you explain the UV Index and how it can help individuals be more aware?
Dr. Collins: Certainly! The UV Index is a numerical scale ranging from 0 to 11 that indicates the intensity of UV radiation on a given day. A higher number means a greater likelihood of sunburn and potential skin damage. By checking the UV Index before heading outside, people can plan their activities and take necessary precautions, like wearing sunscreen or seeking shade.
Editor: That’s a useful tool! Though,the article also notes the ongoing issue of ozone layer depletion.Can you elaborate on how this impacts UV exposure?
Dr. Collins: Yes, the ozone layer plays a crucial role in filtering out harmful UV rays. Unfortunately, man-made chemicals have been damaging it for decades, and while international agreements like the Montreal Protocol have considerably reduced the production of thes harmful substances, the recovery of the ozone layer is not expected until 2050. Until then,we will continue to experience heightened UV exposure.
Editor: That’s quite concerning. What are some immediate actions individuals can take to protect themselves from UV radiation in light of this facts?
Dr. Collins: Several steps are essential. Firstly, always use broad-spectrum sunscreen with an SPF of at least 30, even on cloudy days. Wearing protective clothing, sunglasses, and hats can also shield you from direct sunlight. Additionally,it’s wise to avoid outdoor activities during peak sun hours,typically between 10 AM and 4 PM.
editor: Those are great recommendations, Dr. Collins. Lastly, what message would you like to convey to our readers regarding their health and sun exposure this summer?
Dr. Collins: I’d like to emphasize that awareness is key. Understanding the risks associated with UV radiation and taking preventative measures can significantly reduce your chances of developing health issues in the future. Enjoy the summer sun, but do it safely!
Editor: Thank you, Dr. Collins, for your insights and practical advice. Your expertise is invaluable as we navigate these important health topics.
Dr. Collins: Thank you for having me; it’s been a pleasure to share this information!
