Exposure to magnetic fields and the risk of poor sperm quality.
Published in: Reprod Toxicol 2010; 29 (1): 86-92
Aim of study (acc. to author)
Case or control status was determined by
semen analyses of two specimens per participant according to the WHO criteria for poor semen quality. The magnetic field exposure was assessed by 24-h measurement on a typical day of the 3 months period representing the cycle length for spermatogenesis. The cutpoint 90th percentile was defined as the magnetic field level above which 10 % of all 24-h measurements had a higher value. The 90th percentile was 0.16 µT (1.6 mG) and corresponded to 2.4 h of the exposure period (10% of 24 h). Endpoint/type of risk estimation
Type of risk estimation:
(odds ratio (OR))
measurement: 24-h measurement of
magnetic field level of 40 - 1000 Hz at a rate of every four seconds calculation: 90th
percentile Exposure groups
Reference group 1
magnetic field level at 90th percentile: < 0.16 µT
magnetic field level at 90th percentile: ≥ 0.16 µT
Reference group 3
duration of magnetic field exposure ≥ 0.16 µT: < 1 h
duration of magnetic field exposure ≥ 0.16 µT: 1 - 3 h
duration of magnetic field exposure ≥ 0.16 µT: 3 - 6 h
duration of magnetic field exposure ≥ 0.16 µT: > 6 h
China ( Shanghai metropolitan area)
Statistical analysis method:
conditional logistic regression
season of enrollment, marital status
Conclusion (acc. to author)
Kim HS et al.
Continuous exposure to 60 Hz magnetic fields induces duration- and dose-dependent apoptosis of testicular germ cells.
Iorio R et al.
Involvement of mitochondrial activity in mediating ELF-EMF stimulatory effect on human sperm motility.
Tenorio BM et al.
Testicular development evaluation in rats exposed to 60 Hz and 1 mT electromagnetic field.
Roychoudhury S et al.
Influence of a 50 Hz extra low frequency electromagnetic field on spermatozoa motility and fertilization rates in rabbits.
Kim YW et al.
Effects of 60 Hz 14 microT magnetic field on the apoptosis of testicular germ cell in mice.
Farkhad SA et al.
Effects of extremely low frequency electromagnetic fields on testes in guinea pig.
Iorio R et al.
A preliminary study of oscillating electromagnetic field effects on human spermatozoon motility.
Chung MK et al.
Evaluation of spermatogenesis and fertility in F1 male rats after in utero and neonatal exposure to extremely low frequency electromagnetic fields.
Lee JS et al.
Effects of 60 Hz electromagnetic field exposure on testicular germ cell apoptosis in mice.
Elbetieha A et al.
Long-term exposure of male and female mice to 50 Hz magnetic field: effects on fertility.
Li DK et al.
A population-based prospective cohort study of personal exposure to magnetic fields during pregnancy and the risk of miscarriage.
Lundsberg LS et al.
Occupationally related magnetic field exposure and male subfertility.