Wednesday, October 25, 2017

Hormone Melatonin: Shift work and cancer risk

Kyle J. Norton(Scholar and Master of Nutrients, all right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published on line, including world wide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.                     

                                 Hormone Melatonin

Melatonin, also known as N-acetyl-5-methoxytryptamine, a hormone secreted by the pineal gland in the brain with functions of regulating sleep cycles, other hormones, timing in secretion of female hormones that affect the menstrual cycle, etc. The levels of the circulating hormone vary in a daily cycle, depending to the circadian rhythm is an internal 24-hour “clock”.

     Hormone Melatonin: Shift work and cancer risk



About 15-20% of the employees in Europe and in the USA are engaged in shift work that involves night work. In the review of disruption in the melatonin synthesis and its effects on shift workers found that in six out of ten studies, a statistically significant association between night shift work and risk of breast cancer has been shown (OR = 2.2; 95% CI: 1.1-4.5 in nurses in Norway with > 30 years of night shift work). The increased cancer risk has been reported in nurses, radio-telephone operators, flight attendants, and women employed in the enterprises, in which 60% of employees work at night. Most of the analyses have been based on the data from the registries, with limited potential for the exposure assessment and confounders adjustment(20)



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Sources
(20) http://www.ncbi.nlm.nih.gov/pubmed/21870422

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