sun and melanin

Too much sun exposure allows UV rays to reach your inner skin layers. Melanin serves as a natural defense against UV rays, and people with dark complexions, especially those with olive, brown or black skin, already have a high concentration of melanin in their skin. John Barrymore Every skin tone on earth is at risk of being dried out, aged and burnt by the sun. A little known, avian anatomical conundrum may help resolve melanin paradoxes. Lighter-skinned people can get enough vitamin D after 10 to 15 minutes of sun exposure a few times a week, but people with dark complexions may need five to 10 times more sun exposure to synthesize that same amount of vitamin D [source: Zelman]. The sun and space and the universe are replications of the microcosm in us and all things on a cellular level, so the sun would be a large dark melanin molecule in an organic universe. [45]. Your email address will not be published. On the other hand, because dark skin naturally provides protection from the sun's ultraviolet rays, it prevents dark-skinned people from producing the necessary amount of vitamin D [source: Zelman]. [i]. As the pigment receives the UV rays which have penetrated the skin, it turns darker and that's how you get the sun tan look. Melanin has a diverse set of roles in various organisms. 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If you're concerned about vitamin D levels, speak to a doctor or dietician. Commonly overlooked, however, is melanin’s ability to convert gamma and ultraviolet radiation into metabolic energy within living systems. Because of this property, melanin is thought to protect skin cells from UVB radiation damage, reducing the risk of folate depletion and dermal degradation, and it is considered that exposure to UV radiation is associated with increased risk of malignant melanoma, a cancer of melanocytes (melanin cells). Our world is a wonderfully diverse and beautiful place, with millions of species of animals and plants, capped off by the most dominant species human beings. The host immunity is the only alternative to prevent and or reduce the infection and mortality rate as well. Required fields are marked *. And for people of color, … Unfortunately, decades of misinformation have perpetuated the myth that melanin-rich skin has natural protection from the sun, leaving sunscreen unnecessary for people of color. Animal inability to utilize light energy directly has been traditionally assumed. 1) Sunlight Has Pain-Killing (Analgesic) Properties: A 2005 study published in the journal Psychosomatic Medicine titled, “The effect of sunlight on postoperative analgesic medication use: a prospective study of patients undergoing spinal surgery,” analyzed patients staying on the bright side of the hospital unit who were exposed to 46% higher-intensity sunlight on average. Learn how your comment data is processed. But while a higher concentration of melanin provides some sun protection, it doesn't prevent skin cancer. Excessive sun exposure, even over a period of years, only worsens the body’s ability to produce enough melanin. There may possibly be other metabolic advantages that can be derived from this greater conductive capacity of the Sun’s radiation as a source of energy for Biological processes in the Human body. This is the website of the man that scientists have studied in at least a few studies. 5) Sunlight May Convert To Metabolic Energy: If a novel hypothesis published in 2008 in the Journal of Alternative and Complementary Medicine is correct,[vi] a longstanding assumption that animals are incapable of utilizing light energy directly is now called into question. As a result of this higher Carbon concentration, the main advantage of possessing Eumelanin is in the absorption of the Sun’s UV Radiation and protection from UV skin damage. When people with lighter complexions spend time in the sun, their bodies produce melanin, the pigment that gives color to skin and creates a tan. [iv], 4) Daytime Sunlight Exposure Improves Evening Alertness: A 2012 study published in the journal Behavioral Neuroscience titled, “Effects of prior light exposure on early evening performance, subjective sleepiness, and hormonal secretion,” found that subjects felt significantly more alert at the beginning of the evening after being exposed to 6 hours of mainly daylight exposure, whereas they became sleepier at the end of the evening after artificial light exposure.[v]. Melanin protects our skin and also creates vitamin D. When your body defends itself against UV rays, your skin tans or darkens. Increased energy at solar MAX, albeit relatively a small 0.1% increase from MIN, apparently modifies the human genome/epigenome and engenders changes that predispose to various diseases, thereby shortening lifespan. What is the function of melanin? Levels of melanin depend on race and amount of sunlight exposure. A natural sunscreen. Take a sunburn, for example. Clinicians and researchers are well acquainted with melanin in skin and ocular pathologies and now increasingly are with internal, melanized, pathology-associated sites not obviously subject to light radiation (e.g. One is ‘melanin’, unusual in an absorption across the UV-visual spectrum which is controversial. Information about the device's operating system, Information about other identifiers assigned to the device, The IP address from which the device accesses a client's website or mobile application, Information about the user's activity on that device, including web pages and mobile apps visited or used, Information about the geographic location of the device when it accesses a website or mobile application. A more accurate description is that melanin absorbs radiation from the sun. In a review  titled, “Melanin directly converts light for vertebrate metabolic use: heuristic thoughts on birds, Icarus and dark human skin,” Geoffrey Goodman and Dani Bercovich offer a thought-provoking reflection on the topic, the abstract of which is well worth reading in its entirety: “Pigments serve many visually obvious animal functions (e.g. This secret drives Melanin and his mother apart. For many people, the dog days of July mean grabbing an ice pop, lounging outside, and letting the summer sun hit your skin. The plant contains aloesin, a compound that was found to suppress tyrosinase in a 2002 study in Clinical and Experimental Dermatology . And research shows that vitamin D may also help protect against chronic diseases such as diabetes, cancer, rheumatoid arthritis and heart disease [source: Kotz]. chance of occurrence of skin cancer are more in the people with low melanin level and vice versa [24]. The pecten may help cope with energy and nutrient needs under extreme conditions, by a marginal but critical, melanin-initiated conversion of light to metabolic energy, coupled to local metabolite recycling. Melanocytes produce two types of melanin: pheomelanin (red) and eumelanin (very dark brown). Melanin has a variety of functions, the most primary being its pigmentation of skin and hair, and sun protection of the skin and eyes. What it is: There is no such thing as a safe tan. Melanin's primary function is to protect the skin from sun damage, but it carries additional benefits that are enjoyed mostly by those with darker skin. Any polymer or macro-structure of melanin monomers is ‘melanin’. This work is reproduced and distributed with the permission of GreenMedInfo LLC. Melanin Is Securing the Skin Place Under the Sun Human skin, during the day time, is exposed to electromagnetic wavelengths of solar radiation, including visible light (λ > 400 nm), UVA (λ = 320–400 nm), and UVB (λ = 280–320 nm), which imposes a considerable stress on this organ ( 2 ). "African-Americans Can Get Skin Cancer: This Summer, Protect Yourself." In order for the sunscreen to work, however, you have to apply plenty and it has to stay on. Its roles derive from complex structural and physical-chemical properties e.g. This high concentration of melanin is responsible for their dark complexions and protects them from burning easily. In the sun 's ultraviolet rays have unexpected lessons also for human physiology and medicine. ” glow... Could be considered our body ’ s own natural sunscreen melanin in the sun melanin 's mother is is. Cells produce the pigment melanin, which causes the tan color change in your skin is likely! 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