Study type: Epidemiological study

Association of personal exposure to power-frequency magnetic fields with pregnancy outcomes among women seeking fertility treatment in a longitudinal cohort study epidem.

Published in: Fertil Steril 2020; 114 (5): 1058-1066

Aim of study (acc. to author)

A prospective cohort study was conducted in the USA to investigate the potential association between exposure of women to power-frequency magnetic fields and pregnancy outcomes.

Endpoint/type of risk estimation

Type of risk estimation: (relative risk (RR))




Study size

Type Value
Total 119
Statistical analysis method: (adjustment: )

Results (acc. to author)

The median and maximum of the overall daily mean (daily peak) MF exposure levels were 0.11 µT (0.21 µT) and 1.55 µT (5.87 µT), respectively. Magnetic field exposure was highest among women who changed environments four or more times per day.
Overall, no statistically significant associations between magnetic field exposure and pregnancy outcomes were observed. Effect estimates, both positive and negative, varied by outcome and the exposure metric.
The authors concluded that there was no evidence for an association between personal exposure of women to power frequency magnetic fields and pregnancy outcomes.

Study funded by

Related articles