Which uv ray is bad

Please consult your doctor for specific health advice. UV is not hot. It can't be felt and isn't connected to the temperature.

UV levels can be damaging on cool, cloudy days and warm, sunny days. UV is always highest during the middle part of the day between 10am and 2pm or 11am and 3pm daylight saving time.

UV damage is accumulative. Your skin remembers and records all the UV exposure over the years which contributes to your long-term risk of skin cancer.

Even low UV levels can be harmful when exposed for long periods. Too much UV radiation can cause skin and eye damage, sunburn, tanning and skin cancer. Sunburn is a UV radiation burn to the skin. In Victoria's summer months, skin can burn in as little as 11 minutes and can take days or weeks to heal. Find out more about sunburn treatment at Better Health Channel.

Sunburn prevention is best. Always check the sun protection times on the free SunSmart app and use a combination of sun protection measures when required.

UV also causes skin sagging, blotchiness and roughness. View the changes to our visitor policy » View information for Guest Services ».

New to MyHealth? Manage Your Care From Anywhere. Activate Account. Create a New Account. Forgot Username or Password? Ultraviolet radiation UV exposure categories Effects of UV exposure Genetics of skin cancer Other causes and risk factors for skin cancer.

Merkel cell cancer. T-cell lymphoma. Exposure to UV rays is linked to a number of harmful health conditions, including the following: Skin cancer Consider the following statistic related to skin cancer: More than 1 million cases of non-melanoma skin cancer are diagnosed in the US each year. Most skin cancers appear after age 50, but skin damage from the sun begins at an early age.

Therefore, protection should start in childhood to prevent skin cancer later in life. Premature aging photoaging Sun exposure also causes premature aging of the skin, a condition called photoaging, which is different than chronological aging. People who sunbathe regularly show photoaging early in life - often before 30 years of age.

Chronologically-aged skin, more often, shows changes after age 40 or older. Freckling, fine wrinkling, and dilation of capillaries are often seen early in the photoaging process. Photoaged skin often develops irregular pigmentation liver spots in later years. Both photoaging and chronological aging cause wrinkling and loss of skin elasticity. However, these changes occur much earlier when skin has been overexposed to the sun.

Cataracts and other eye disorders Cataracts, an eye disorder characterized by a change in the structure of the crystalline lens that causes blurred vision, are a leading cause of blindness around the world - and excessive UV exposure is one of the risk factors in the development of cataracts.

Immune system damage The skin is part of the body's natural defense system. Sunscreens can help Studies have shown that sunscreens can prevent UV-induced wrinkling.

Consider the following recommendations:. Choose a sunscreen for children and test it on your child's wrist before using. If your child develops skin or eye irritation, choose another brand. Apply the sunscreen very carefully around the eyes. Apply sunscreens to all exposed areas of skin, including easily overlooked areas. This includes the rims of the ears, the lips, the back of the neck, and tops of the feet. Use sunscreens for all children over 6 months old.

All skin types need protection from UV rays. Even dark-skinned children can have painful sunburns. Apply sunscreens 30 minutes before going out into the sun to give it time to work. Use it liberally and reapply it every 2 hours after being in the water or after exercising or sweating. Sunscreens are not just for the beach. Use them when you are working in the yard or playing sports. Using a sunscreen with SPF of 20 to 30 offers substantial protection from sunburn and prevents tanning.

Talk with your older child or teen about using sunscreen and why it's important. Set a good example for them by using sunscreen yourself. Teach your teen to avoid tanning beds and salons. Most tanning beds and salons use ultraviolet-A bulbs. Research has shown that UVA rays may contribute to premature skin aging and skin cancer. One of the best things you can do to protect and improve your health is to stay informed.

Health Home Wellness and Prevention. What does tanning do to the skin? What is ultraviolet radiation? Energy from the sun reaches the earth as visible, infrared, and ultraviolet UV rays. Ultraviolet A UVA is made up of wavelengths to nm nanometers in length. Ultraviolet B UVB wavelengths are to nm. Ultraviolet C UVC wavelengths are to nm. But UVA rays cause aging, wrinkling, and loss of elasticity.

How can you protect yourself against the sun's harmful rays? The best way to prevent sunburn in children over 6 months old is to follow these tips from the American Academy of Dermatology: Generously apply a broad-spectrum water-resistant sunscreen with an SPF Sun Protection Factor of at least 30 to all exposed skin.

Get vitamin D through a healthy diet that may include vitamin supplements.