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Author Gabriel, K.M.A.; Kuechly, H.U.; Falchi, F.; Wosniok, W.; Hölker, F. url  doi
openurl 
  Title Resources of dark skies in German climatic health resorts Type Journal Article
  Year 2017 Publication International Journal of Biometeorology Abbreviated Journal Int J Biometeorol  
  Volume 61 Issue 2 Pages (up) 11-22  
  Keywords Circadian rhythm; Germany; Health resorts; Light pollution; Regulation; Remote sensing  
  Abstract Illumination of nocturnal environments is increasing steadily worldwide. While there are some benefits for mankind, light at night affects animals, plants, and human health by blurring the natural distinction between day and night. International regulations exist to protect the environment for the maintenance of human health but nocturnal darkness is not considered. In Germany, cities and communities labeled as Climatic Health Resorts provide for high standards in air quality. However, their degree of nocturnal darkness is unexplored so far. In our study, we examined the degree of nocturnal darkness in German Climatic Health Resorts by two datasets based on georeferenced remote sensing data. The majority of Climatic Health Resorts (93.1 %) are able to offer a relative respite (>/= 20 mag/arcsec2) from a degraded nocturnal environment, while only 3.4 % are able to offer a dark, if by no means pristine, night environment (>/= 21 mag/arcsec2). Climatic Health Resorts emit less light as well as are less affected by night sky brightness compared to the average of non-classified communities. In combination with daytime requirements, the resorts provide conditions for a more distinct day-and-night-cycle than non-classified communities.  
  Address Leibniz-Institute for Freshwater Ecology and Inland Fisheries, Berlin, Germany  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0020-7128 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27192999 Approved no  
  Call Number LoNNe @ kyba @ Serial 1456  
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Author Studer, P.; Brucker, J.M.; Haag, C.; Van Doren, J.; Moll, G.H.; Heinrich, H.; Kratz, O. url  doi
openurl 
  Title Effects of blue- and red-enriched light on attention and sleep in typically developing adolescents Type Journal Article
  Year 2018 Publication Physiology & Behavior Abbreviated Journal Physiol Behav  
  Volume 199 Issue Pages (up) 11-19  
  Keywords Human Health  
  Abstract Differential effects of blue- and red-enriched light on attention and sleep have been primarily described in adults. In our cross-over study in typically developing adolescents (11-17years old), we found attention enhancing effects of blue- compared to red-enriched light in the morning (high intensity of ca. 1000lx, short duration: <1h) in two of three attention tasks: e.g. better performance in math tests and reduced reaction time variability in a computerized attention test. In our pilot study, actigraphy measures of sleep indicated slight benefits for red- compared to blue-enriched light in the evening: tendencies toward a lower number of phases with movement activity after sleep onset in the complete sample and shorter sleep onset latency in a subgroup with later evening exposure times. These findings point to the relevance of light concepts regarding attention and sleep in typically developing adolescents. Such concepts should be developed and tested further in attention demanding contexts (at school) and for therapeutic purposes in adolescents with impaired attention or impaired circadian rhythms.  
  Address Department of Child and Adolescent Mental Health, University Hospital Erlangen, Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU), Erlangen, Germany. Electronic address: oliver.kratz@uk-erlangen.de  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0031-9384 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:30381244 Approved no  
  Call Number GFZ @ kyba @ Serial 2142  
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Author Reiter, R.; Tan, D.; SanchezBarcelo, E.; Mediavilla, M.; Gitto, E.; Korkmaz, A. url  doi
openurl 
  Title Circadian mechanisms in the regulation of melatonin synthesis: disruption with light at night and the pathophysiological consequences Type Journal Article
  Year 2011 Publication Journal of Experimental and Integrative Medicine Abbreviated Journal J Exp Integr Med  
  Volume 1 Issue 1 Pages (up) 13  
  Keywords Human Health  
  Abstract In the past two decades, the results of a number of epidemiological studies have uncovered an association between excessive light exposure at night and the prevalence of cancer. Whereas the evidence supporting this link is strongest between nighttime light and female breast and male prostate cancer, the frequency of other tumor types may also be elevated. Individuals who have the highest reported increase in cancer are chronic night shift workers and flight attendants who routinely fly across numerous time zones.

There are at least two obvious physiological consequences of nighttime light exposure, i.e., a reduction in circulating melatonin levels and disruption of the circadian system (chronodisruption). Both these perturbations in experimental animals aggravate tumor growth. Melatonin has a long investigative history in terms of its ability to stymie the growth of many tumor types. Likewise, in the last decade chronodisruption has been unequivocally linked to a variety of abnormal metabolic conditions including excessive tumor growth.

This brief review summarizes the processes by which light after darkness onset impedes melatonin production and disturbs circadian rhythms. The survey also reviews the evidence associating the ostensible danger of excessive nighttime light pollution to cancer risk. If an elevated tumor frequency is definitively proven to be a consequence of light at night and/or chronodisruption, it seems likely that cancer will not be the exclusive pathophysiological change associated with the rampant light pollution characteristic of modern societies.
 
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  ISSN 1309-4572 ISBN Medium  
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  Notes Approved no  
  Call Number IDA @ john @ Serial 137  
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Author Czeisler, C.A. url  doi
openurl 
  Title Perspective: casting light on sleep deficiency Type Journal Article
  Year 2013 Publication Nature Abbreviated Journal Nature  
  Volume 497 Issue 7450 Pages (up) S13  
  Keywords Human Health; Circadian Rhythm/physiology/radiation effects; Electricity/adverse effects; Humans; Jet Lag Syndrome/etiology/physiopathology/therapy; Lighting/*adverse effects; Melatonin/metabolism/secretion; Phototherapy; Sleep Deprivation/epidemiology/*etiology/*physiopathology/therapy; Suprachiasmatic Nucleus/physiology/radiation effects  
  Abstract  
  Address Division of Sleep Medicine, Harvard Medical School, and Division of Sleep Medicine, Department of Medicine, Brigham and Women's Hospital, in Boston, Massachusetts, USA. charles_czeisler@hms.harvard.edu  
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  ISSN 0028-0836 ISBN Medium  
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  Notes PMID:23698501 Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial 499  
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Author Bercz, P.A.; Jaffe, F. url  openurl
  Title Adverse health effects of shift work and shift work sleep disorder Type Journal Article
  Year 2012 Publication Dialogue and Diagnosis Abbreviated Journal  
  Volume 2 Issue Pages (up) 13-20  
  Keywords Human Health  
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  Notes Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial 506  
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