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Health effects of sunlight exposure. Exposing skin to the ultraviolet radiation in sunlight has both positive and negative health effects. On the positive side, exposure allows for the synthesis of vitamin D 3. Vitamin D has been suggested as having a wide range of positive health effects, which include strengthening bones [ 1] and possibly ...
Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. [ 1][ 2] They are one of the greatest barriers standing in the way of plans for interplanetary travel by crewed spacecraft, [ 3][ 4][ 5] but ...
Menkes disease. Menkes disease ( MNK ), also known as Menkes syndrome, [ 1][ 2] is an X-linked recessive disorder caused by mutations in genes coding for the copper-transport protein ATP7A, [ 3] leading to copper deficiency. [ 4][ 5] Characteristic findings include kinky hair, growth failure, and nervous system deterioration.
More worryingly, a study from Lund University, in Sweden, which appeared in the journal eClinical Medicine the previous month, found that any-size tattoo was linked to a 21% higher link of ...
The field strength of electromagnetic radiation is measured in volts per meter (V/m). [ 2]: 139. The most common health hazard of radiation is sunburn, which causes between approximately 100,000 and 1 million new skin cancers annually in the United States. [ 3][ 4] In 2011, the World Health Organization (WHO) and the International Agency for ...
Mayo Clinic is a nonprofit hospital system with campuses in Rochester, Minnesota; Scottsdale and Phoenix, Arizona; and Jacksonville, Florida. [ 22][ 23] Mayo Clinic employs 76,000 people, including more than 7,300 physicians and clinical residents and over 66,000 allied health staff, as of 2022. [ 5] In addition, Mayo Clinic partially owns and ...
Ketoconazole is linked to some improvements in hair health, and it may have certain effects on the hormone DHT at the hair follicle level. However, no high-quality research suggests that ...
A variety of health effects can result from tattooing. Because it requires breaking the skin barrier, tattooing carries inherent health risks, including infection and allergic reactions. Modern tattooists reduce such risks by following universal precautions, working with single-use disposable needles, and sterilising equipment after each use.