{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T23:37:39Z","timestamp":1781739459738,"version":"3.54.5"},"reference-count":28,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2007,10,25]],"date-time":"2007-10-25T00:00:00Z","timestamp":1193270400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Pineal Research"],"published-print":{"date-parts":[[2008,4]]},"abstract":"<jats:p><jats:bold>Abstract:\u2002<\/jats:bold> In three experiments, adult male Djungarian hamsters (<jats:italic>Phodopus sungorus<\/jats:italic>) were exposed 24\u2003hr\/day for 60\u2003days to radio frequency electromagnetic fields (RF\u2010EMF) at 383, 900, and 1800\u2003MHz, modulated according to the TETRA (383\u2003MHz) and GSM standards (900 and 1800\u2003MHz), respectively. A radial waveguide system ensured a well defined and uniform exposure at whole\u2010body averaged specific absorption rates of 80\u2003mW\/kg, which is equal to the upper limit of whole\u2010body exposure of the general population in Germany and other countries. For each experiment, using two identical waveguides, hamsters were exposed (n\u2003=\u2003120) and sham\u2010exposed (n\u2003=\u2003120) in a blind fashion. In all experiments, pineal and serum melatonin levels as well as the weights of testes, brain, kidneys, and liver were not affected. At 383\u2003MHz, exposure resulted in a significant transient increase in body weight up to 4%, while at 900\u2003MHz this body weight increase was more pronounced (up to 6%) and not transient. At 1800\u2003MHz, no effect on body weight was seen. The results corroborate earlier findings which have shown no effects of RF\u2010EMF on melatonin levels in vivo and in vitro. The data are in accordance with the hypothesis that absorbed RF energy may result in metabolic changes which eventually cause body weight increases in exposed animals. The data support the notion that metabolic effects of RF\u2010EMFs need to be investigated in more detail in future studies.<\/jats:p>","DOI":"10.1111\/j.1600-079x.2007.00522.x","type":"journal-article","created":{"date-parts":[[2007,10,27]],"date-time":"2007-10-27T19:15:48Z","timestamp":1193512548000},"page":"267-272","source":"Crossref","is-referenced-by-count":37,"title":["Effects of mobile phone electromagnetic fields at nonthermal SAR values on melatonin and body weight of Djungarian hamsters (<i>Phodopus sungorus<\/i>)"],"prefix":"10.1111","volume":"44","author":[{"given":"Alexander","family":"Lerchl","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heike","family":"Kr\u00fcger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Niehaus","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joachim 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