Much of the damage that ultraviolet radiation (UV) does to skin occurs hours after sun exposure, a team of Yale-led researchers concluded in a study that was published online Feb. 19 by the journal Science.
Feb 19, 2015
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Imagine a skin cream that heals damage occurring throughout the day when your skin is exposed to sunlight or environmental toxins. That's the potential of a synthetic, biomimetic melanin developed by scientists at Northwestern ...
Nov 2, 2023
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After humans and Neandertals met many thousands of years ago, the two species began interbreeding. Although Neandertals aren't around anymore, about two percent of the DNA in non-African people living today comes from them. ...
Oct 5, 2017
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The summer weather has surprised us and made getting your daily dose of vitamin D that much easier. But the sunny weather always prompts questions about how to enjoy it safely.
Aug 6, 2018
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New research from South Australian scientists has shown that vitamin D (also commonly known as the sunshine vitamin) is unlikely to protect individuals from multiple sclerosis, Parkinson's disease, Alzheimer's disease or ...
Jul 10, 2018
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(Medical Xpress) -- According to a new report published in Medical Problems of Performing Artists, Austrian composer Wolfgang Amadeus Mozart may have lived longer had he spent more time in the sun and allowed his body to ...
Melanoma is the most serious type of skin cancer. It develops in the cells that produce the pigment in your skin that gives it color. It most often occurs on skin that is exposed to the sun, but can develop in your eyes and, ...
May 26, 2022
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Tuberculosis (TB) remains one of the deadliest infectious diseases in low income countries, with around 1.6 million people dying of the disease each year. In a new study, researchers show that sun-exposed oyster mushrooms ...
Jun 9, 2019
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If you've had a skin cancer check lately, you might have been told to consider adding a daily vitamin B3 pill to your skin safety regime (hopefully, you already use sunscreen, wear sun-smart clothes and avoid sun exposure ...
Mar 22, 2022
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Eighty years ago, when sun exposure was first associated with skin cancer, popular culture was exalting tanning by emphasizing that a "fine brown color suggests health and good times, and is a pleasant thing to see."
Feb 11, 2016
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A sunburn is a burn to living tissue such as skin produced by overexposure to ultraviolet (UV) radiation, commonly from the sun's rays. Usual mild symptoms in humans and animals are red or reddish skin that is hot to the touch, general fatigue, and mild dizziness. An excess of UV-radiation can be life-threatening in extreme cases. Exposure of the skin to lesser amounts of UV radiation will often produce a suntan.
Excessive UV-radiation is the leading cause of primarily non malignant skin tumors. Sunscreen is widely agreed to prevent sunburn, although a minority of scientists argue that it may not effectively protect against malignant melanoma, which is either caused by a different part of the ultraviolet spectrum or, according to others, not caused by sun exposure at all. Clothing, including hats, is considered the preferred skin protection method. Moderate sun tanning without burning can also prevent subsequent sunburn, as it increases the amount of melanin, a skin photoprotectant pigment that is the skin's natural defense against overexposure. Importantly, sunburn and the increase in melanin production are both triggered by direct DNA damage. When the skin cells' DNA is damaged by UV radiation, type I cell-death is triggered and the skin is replaced. Malignant melanoma may occur as a result of indirect DNA damage if the damage is not properly repaired. Proper repair occurs in the majority of DNA damage, and as a result not every exposure to UV results in cancer. The only cure for sunburn is slow healing, although some skin creams can help with the symptoms.
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