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19 de ene. de 2023 · Sunlight has both positive and negative effects on the human body. For example, it is well known that sun exposure can cause burns to the skin and increase the risk of cancer over the long...
Since UV rays, and therefore sunlight and sunlamps, have both health benefits and risks, a number of public health organizations state that there needs to be a balance between the risks of having too much sunlight or too little. There is a general consensus that sunburn should always be avoided.
11 de oct. de 2016 · For thousands of years humans have understood that sunlight has an important and significant impact on human health and disease. Sunlight is composed of three major wavelength bands: visible light (wavelengths of 400–800 nm); UVR (wavelength of 100–400 nm); and, infrared radiation (wavelengths > 800 nm).
Both forms can damage collagen fibers, destroy vitamin A in skin, accelerate aging of the skin, and increase the risk of skin cancers. Excessive sun exposure can also cause cataracts and diseases aggravated by UVR-induced immunosuppression such as reactivation of some latent viruses.
4 de nov. de 2020 · Health benefits. The absence of sunlight. Depression and SAD. Alternatives. Summary. From promoting the growth of plants and crops to keeping people warm, sunlight is essential for life. In...
19 de oct. de 2016 · The first scientifically-established health benefit of sun exposure was the discovery in 1919 that sunlight cured rickets. 4-5 This was followed in 1924 up by the discovery that an inactive lipid in the diet and skin could be converted by UV light into an antirachitic substance. 6 The identification of vitamin D occurred in 1931. 7 The associati...
21 de jun. de 2022 · Worldwide, it is estimated that 15 million people are blind due to cataracts; of these, some 10% may be due to exposure to UVR. Excessive sun exposure in children and adolescents contributes to skin cancer in later life. A certain amount of UV exposure is beneficial to health, in particular for vitamin D.
