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In this way, melanin protects skin cells from UVA and UVB radiation damage that causes photoaging and the risk of malignant melanoma, a cancer of melanin cells. [195] Melanin also protects against photodegradation of the vitamin folate in skin tissue, and in the eyes, preserves eye health. [193]
Prolonged exposure is associated with the development of skin cancers, photoaging or premature skin aging, immune suppression, and eye diseases like cataracts. [ 14 ] [ 15 ] Given these dual effects, public health organizations emphasize the importance of striking a balance between the benefits and risks of UV exposure.
Within the eye, 11-cis-retinal is bound to the protein opsin to form rhodopsin in rod cells and iodopsin in cone cells. As light enters the eye, the 11-cis-retinal is isomerized to the all-trans form. The all-trans-retinal dissociates from the opsin in a series of steps called photo-bleaching. This isomerization induces a nervous signal along ...
The U.S. Food and Drug Administration has cleared Cresilon's gel to quickly control bleeding, the privately held company said on Thursday, potentially giving emergency medical technicians and ...
Vitamin E can also interact with some medications and other supplements. [1] Vitamin E has been studied as a treatment for skin health and skin ageing, immune function, [61] and managing conditions like cardiovascular disease [62] or Alzheimer's disease (AD), [63] or certain types of cancer. [62]
Vitamin C supplements among other dietary supplements at a US drug store. Vitamin C has a definitive role in treating scurvy, which is a disease caused by vitamin C deficiency. Beyond that, a role for vitamin C as prevention or treatment for various diseases is disputed, with reviews often reporting conflicting results.
[68] [69] Linus Pauling advocated for the use of vitamin C to prevent and treat various diseases, especially the common cold and cancer. [70] [71] [72] Still, the arguments given in these books were not based on solid peer-reviewed medical research. Pauling published several books and articles on the topic, such as Vitamin C and the Common Cold ...
Isotretinoin, also known as 13-cis-retinoic acid and sold under the brand name Accutane among others, is a medication used to treat skin diseases like harlequin-type ichthyosis, and lamellar ichthyosis, and severe cystic acne or moderate acne that is unresponsive to antibiotics. [6]