Dr. Alexander Lerchl

Electromagnetic Fields
School of Science
Constructor University Bremen gGmbH
Campus Ring 1 | 28759 Bremen | Germany
Phone number
+49 421 200-3241
Fax number
+49 421 200-493241
Email Address
Research II, Room 56
Research Interests

Zoology, Neurophysiology, Neuroendocrinology, Chronobiology, Biostatistics

People often fear the introduction of new technology, particularly the introduction and the use of artificial magnetic and magnetic fields. For example, while the new 5G standard for wireless communication is necessary to transport ever-increasing amounts of data, many people think it is a new, untested technology. Similarly, the public is concerned about new technologies for wirelessly charging automobiles. Our group is investigating the potential biological effects of both technologies, using cell and animal models

University Education
1980 - 1983   University of Marburg
1983 - 1986   University of Göttingen
1986 - 1989   University of Göttingen & German Primate Center, Göttingen
1989 - 1990   University of Texas Health Science Center at San Antonio (post doc)


Fellowships and Awards
1989Fellowship of the NATO scientific advisory board (1989 - 1990)
1992Grant from the German Academy of Sciences, Mainz (academic fellowship for Dr. Marek Niedziela, Poznan, Poland)
1995 - 1998Head of Section "Bioelectricity and Biomagnetism" of the International Society of Biometeorology
19982nd place on list for professorship in Zoology (Dresden; C4) 
1999Appointment as interim head of the Zoological Institute II of the University of Karlsruhe (WS 99/00 - WS 00/01) 
2001Associate Professor (apl. Prof.); appointment by the University of Münster
2005 - 2011Member of the German Radiation Protection Board, Section A6
Research and Teaching Positions
Teaching Experience
Since 1993 continous teaching in general zoology, physiology, and related disciplines (Münster & Karlsruhe)   Lectures:
  • Chronobiology (Lecture & Seminar; SS 95 & WS 95/96; SS 98 & WS 98/99)
  • Hormone Physiology and Vegetative Physiology (SS 96 and SS 01)
  • Neurophysiology (SS 97 and WS 97/98)
  • Hormone Physiology (SS 99)
  • General Zoology and Animal Physiology (WS 99/00 and WS 00/01)
  • Comparative Animal Physiology (WS 99/00, SS 00, and WS 00/01)
Practical Courses:
  • Neurophysiology (WS 93/94 and WS 94/95)
  • Membrane Biology (SS 94)
  • Human Physiology (SS 95)
  • Methods in Reproductive Physiology (WS 97/98)
  • Practical Endocrinology (SS 99)
  • Animal Physiology (WS 99/00, SS 00, and WS 00/01)
  • Main Zoological Course (WS 99/00, SS 00, and WS 00/01)
  • Several Excursions
1983Vordiplom (comparable to B. Sc. biol.); University of Marburg
1986Diplom (comparable to M. Sc. biol.); University of Göttingen
1989Dr.rer.nat. (comparable to PhD); University of Göttingen & German Primate Center, Göttingen
1995Habilitation; venia legendi for Zoology; University of Münster
2001Associate Professor (apl. Prof.); University of Münster
International Experience
1989 - 1990:University of Texas Health Science Center of San Antonio, Texas, Dept of Cellular and Structural Biology (head: Prof. Dr. Russel J. Reiter) Active participant of > 30 International Conferences (also as speaker, chairman, etc.) Continuos contacts and collaborations with scientists of different countries Collaborations with foreign scientists at the Institute of Reproductive Medicine, Münster, with English being the scientific language


Selected Publications

Publications in peer-reviewed articles (2001-2012):

  • Dauth, S., Sirbulescu, R. F., Jordans, S., Rehders, M., Avena, L., Oswald, J., et al. (2011). Cathepsin K deficiency in mice induces structural and metabolic changes in the central nervous system that are associated with learning and memory deficits. BMC Neurosci, 12, 74.
  • Debus, O. M., Lerchl, A., Bothe, H. W., Bremer, J., Fiedler, B., Franssen, M., et al. (2002). Spontaneous central melatonin secretion and resorption kinetics of exogenous melatonin: a ventricular CSF study. J Pineal Res, 33(4), 213-217.
  • Erren, T. C., Erren, M., Lerchl, A., & Meyer-Rochow, V. B. (2008). Clockwork blue: on the evolution of non-image-forming retinal photoreceptors in marine and terrestrial vertebrates. Naturwissenschaften, 95(4), 273-279.
  • Griefahn, B., Kunemund, C., Blaszkewicz, M., Lerchl, A., & Degen, G. H. (2002). Effects of electromagnetic radiation (bright light, extremely low-frequency magnetic fields, infrared radiation) on the circadian rhythm of melatonin synthesis, rectal temperature, and heart rate. Ind Health, 40(4), 320-327.
  • Hermann, R., Podhajsky, S., Jungnickel, S., & Lerchl, A. (2002). Potentiation of antiproliferative effects of tamoxifen and ethanol on mouse hepatoma cells by melatonin: possible involvement of mitogen-activated protein kinase and induction of apoptosis. J Pineal Res, 33(1), 8-13.
  • Hermann, R., Poppe, L., Pilbak, S., Boden, C., Maurer, J., Weber, S., et al. (2005). Predicted 3D-structure of melanopsin, the non-rod, non-cone photopigment of the mammalian circadian clock, from Djungarian hamsters (Phodopus sungorus). Neurosci Lett, 376(2), 76-80.
  • Kamischke, A., Simoni, M., Schrameyer, K., Lerchl, A., & Nieschlag, E. (2001). Is inhibin B a pharmacodynamic parameter for FSH in normal men? Eur J Endocrinol, 144(6), 629-637.
  • Karasek, M., & Lerchl, A. (2002). Melatonin and magnetic fields. Neuro Endocrinol Lett, 23 Suppl 1, 84-87.
  • Keithahn, C., & Lerchl, A. (2005). 5-hydroxytryptophan is a more potent in vitro hydroxyl radical scavenger than melatonin or vitamin C. J Pineal Res, 38(1), 62-66.
  • Klose, M., Grote, K., & Lerchl, A. (2011). Temporal control of spermatogenesis is independent of the central circadian pacemaker in Djungarian hamsters (Phodopus sungorus). Biol Reprod, 84(1), 124-129.
  • Lerchl, A. (2002). Biological rhythms in the context of light at night (LAN). Neuro Endocrinol Lett, 23 Suppl 2, 23-27.
  • Lerchl, A. (2003). Comments on the recent publication on microwave effects on Emicro-Pim1 transgenic mice (Utteridge et al., Radiat. Res. 158, 357-364, 2002). Radiat Res, 159(2), 276; author reply 276-278.
  • Lerchl, A. (2004a). Melatonin administration alters semen quality in normal men. J Androl, 25(2), 185-186; author reply 186-187.
  • Lerchl, A. (2004b). Month of birth and life expectancy: role of gender and age in a comparative approach. Naturwissenschaften, 91(9), 422-425.
  • Lerchl, A. (2005). Where are the Sunday babies? Observations on a marked decline in weekend births in Germany. Naturwissenschaften, 92(12), 592-594.
  • Lerchl, A. (2006). It's Erren's brainchild, folks! Cancer Res, 66(7), 3954-3955.
  • Lerchl, A. (2007). Impossible melatonin data. Int J Androl, 30(5), 484; author reply 484.
  • Lerchl, A. (2008a). Comments on "Effects of a 2450 MHz high-frequency electromagnetic field with a wide range of SARs on the induction of heat-shock proteins in A172 cells" by Wang et al. (Bioelectromagnetics 27: 479-486, 2006). Bioelectromagnetics, 29(7), 583-584; discussion 584.
  • Lerchl, A. (2008b). Where are the Sunday babies? III. Caesarean sections, decreased weekend births, and midwife involvement in Germany. Naturwissenschaften, 95(2), 165-170.
  • Lerchl, A. (2009). Comments on "Radiofrequency electromagnetic fields (UMTS, 1,950 MHz) induce genotoxic effects in vitro in human fibroblasts but not in lymphocytes" by Schwarz et al. (Int Arch Occup Environ Health 2008: doi: 10.1007/s00420-008-0305-5). Int Arch Occup Environ Health, 82(2), 275-278.
  • Lerchl, A. (2010a). Are these data real? Comments on "No effects of intermittent 50 Hz EMF on cytoplasmic free calcium and on the mitochondrial membrane potential in human diploid fibroblasts." by Pilger et al. (Radiat Environ Biophys 43:203-7 (2004)). Radiat Environ Biophys, 49(3), 491-493; author reply 495-497.
  • Lerchl, A. (2010b). Inappropriate statistical analyses lead to erroneous results [Focke et al., Mutation Research 683 (2010) 74-83]. Mutat Res, 692(1-2), 61-62; author reply 63-64.
  • Lerchl, A. (2011a). Animal studies on growth and development. Prog Biophys Mol Biol, 107(3), 404-407.
  • Lerchl, A. (2011b). Comment on "in vitro effect of pulsed 900 MHz GSM radiation on mitochondrial membrane potential and motility of human spermatozoa" by Falzone et al. (Bioelectromagnetics 29: 268-276, 2008). Bioelectromagnetics, 32(6), 509; author reply 510.
  • Lerchl, A. (2012). Letter on 'The effect of pulsed 900-MHz GSM mobile phone radiation on the acrosome reaction, head morphometry and zona binding of human spermatozoa' by Falzone et al. (Int J Androl 34: 20-26, 2011). Int J Androl, 35(1), 103; author reply 104.
  • Lerchl, A., & Bornkessel, C. (2010). Letter to the Editor on 'Effects of exposure to a mobile phone on testicular function and structure in adult rabbit' by Salama et al. Int J Androl, 33(1), 95; author reply 96-97.
  • Lerchl, A., Kruger, H., Niehaus, M., Streckert, J. R., Bitz, A. K., & Hansen, V. (2008). Effects of mobile phone electromagnetic fields at nonthermal SAR values on melatonin and body weight of Djungarian hamsters (Phodopus sungorus). J Pineal Res, 44(3), 267-272.
  • Lerchl, A., & Reinhard, S. C. (2008). Where are the Sunday babies? II. Declining weekend birth rates in Switzerland. Naturwissenschaften, 95(2), 161-164.
  • Lerchl, A., Schindler, C., Eichhorn, K., Kley, F., & Erren, T. C. (2009). Indirect blue light does not suppress nocturnal salivary melatonin in humans in an automobile setting. J Pineal Res, 47(2), 143-146.
  • Lerchl, A., & Wilhelm, A. F. (2010). Critical comments on DNA breakage by mobile-phone electromagnetic fields [Diem et al., Mutat. Res. 583 (2005) 178-183]. Mutat Res, 697(1-2), 60-65.
  • Ludemann, P., Zwernemann, S., & Lerchl, A. (2001). Clearance of melatonin and 6-sulfatoxymelatonin by hemodialysis in patients with end-stage renal disease. J Pineal Res, 31(3), 222-227.
  • Reinhardt, T., Bitz, A., El Ouardi, A., Streckert, J., Sommer, A., Lerchl, A., et al. (2007). Exposure set-ups for in vivo experiments using radial waveguides. Radiat Prot Dosimetry, 124(1), 21-26.
  • Repacholi, M. H., Lerchl, A., Roosli, M., Sienkiewicz, Z., Auvinen, A., Breckenkamp, J., et al. (2012). Systematic review of wireless phone use and brain cancer and other head tumors. Bioelectromagnetics, 33(3), 187-206.
  • Sommer, A. M., Bitz, A. K., Streckert, J., Hansen, V. W., & Lerchl, A. (2007a). Lymphoma development in mice chronically exposed to UMTS-modulated radiofrequency electromagnetic fields. Radiat Res, 168(1), 72-80.
  • Sommer, A. M., Bogusch, C., & Lerchl, A. (2007b). Cognitive function in outbred house mice after 22 weeks of drinking oxygenated water. Physiol Behav, 91(1), 173-179.
  • Sommer, A. M., Grote, K., Reinhardt, T., Streckert, J., Hansen, V., & Lerchl, A. (2009). Effects of radiofrequency electromagnetic fields (UMTS) on reproduction and development of mice: a multi-generation study. Radiat Res, 171(1), 89-95.
  • Sommer, A. M., & Lerchl, A. (2004). The risk of lymphoma in AKR/J mice does not rise with chronic exposure to 50 Hz magnetic fields (1 microT and 100 microT). Radiat Res, 162(2), 194-200.
  • Sommer, A. M., & Lerchl, A. (2006). 50 Hz magnetic fields of 1 mT do not promote lymphoma development in AKR/J mice. Radiat Res, 165(3), 343-349.
  • Sommer, A. M., Streckert, J., Bitz, A. K., Hansen, V. W., & Lerchl, A. (2004). No effects of GSM-modulated 900 MHz electromagnetic fields on survival rate and spontaneous development of lymphoma in female AKR/J mice. BMC Cancer, 4, 77.
  • Sukhotina, I., Streckert, J. R., Bitz, A. K., Hansen, V. W., & Lerchl, A. (2006). 1800 MHz electromagnetic field effects on melatonin release from isolated pineal glands. J Pineal Res, 40(1), 86-91.
  • Tarulli, G. A., Stanton, P. G., Lerchl, A., & Meachem, S. J. (2006). Adult sertoli cells are not terminally differentiated in the Djungarian hamster: effect of FSH on proliferation and junction protein organization. Biol Reprod, 74(5), 798-806.

Book chapters:


  • Lerchl, A., Vergleichende Biologie der Reproduktion, In: Nieschlag, E., Behre, H.M. (eds.) Andrologie: Grundlagen und Klinik. 2. Auflage, Springer, Berlin, 2000, pp. 13-26.
  • Lerchl, A., Comparative biology of reproduction, In: Nieschlag, E., Behre, H.M. (eds.) Andrology: Male Reproductive Health and Dysfunction. 2nd Edition, Springer, Berlin, 2000, pp. 11-22.
  • Lerchl, A., Brendel, H., Niehaus, M., Krishnamurthy, H., Hansen, V., Streckert, J., Bitz, A., 900 MHz electromagnetic fields: exposure parameters and effects on Djungarian hamsters. In: Klauenberg, B.J. and Miklavcic, D. (eds.) Radio Frequency Radiation Dosimetry. Kluwer, Amsterdam, 2000, pp. 419-428.
  • Dasenbrock, C., Lerchl, A., Tierexperimentelle Studien - Krebs. In: Wiedemann, P.M., Schütz, H., Spangenberg, A. (eds.) Risikobewertung Mobilfunk; Ergebnisse eines Wissenschaftlichen Dialogs. Schriften des Forschungszentrums Jülich: 54, B1 - B19 (2005)


Work Experience

Group Leader at Universität Münster Institut für Reproduktionsmedizin

Wissenschaftlicher Mitarbeiter / Arbeitsgruppenleiter at Universitätsklinikum Münster