TESTICULAR TEMPERATURE IN MAN
Herbert F. Newman, Seymour F. Wilhelm · 1950
This 1950 baseline study of testicular temperature provides essential context for understanding modern EMF impacts on male fertility.
Plain English Summary
This 1950 research by Newman examined testicular temperature regulation in men using thermocouples to measure temperatures within the scrotal cavity. The study investigated how environmental conditions affect the natural cooling mechanisms that keep testicles at optimal temperatures for sperm production. This foundational work established baseline data for understanding male reproductive physiology.
Why This Matters
While this 1950 study predates our understanding of EMF effects on male fertility, it provides crucial baseline data for a system we now know is vulnerable to electromagnetic radiation. The research documented normal testicular temperature regulation, which modern studies show can be disrupted by cell phone radiation and laptop heat. Today's men face unprecedented EMF exposures that didn't exist when Newman conducted this work. Current research demonstrates that RF radiation from phones carried in pockets can increase scrotal temperature and reduce sperm quality. Understanding normal testicular physiology from studies like Newman's helps us recognize how modern EMF exposures represent a departure from the conditions under which male reproductive systems evolved and function optimally.
Finding
The testicular temperatures were usually lower than the rectal temperatures and were affected by environmental temperature. No significant difference was found in the temperatures of the 2 testes although the average temperature of the left scrotum was slightly higher than that of the right.
In their words
“The testicular temperatures were usually lower than the rectal temperatures and were affected by environmental temperature. No significant difference was found in the temperatures of the 2 testes although the average temperature of the left scrotum was slightly higher than that of the right.”
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
To determine the temperature of the normal human testis
Temperatures were determined by tissue thermocouples incorporated in the tips of No. 18 hypodermic n...
The difference between the temperature of the 2 testes in the same patient at the same environmental...
Testicular temperatures in man were determined in 28 volunteers by tissue thermocouples. There was no clinical evidence of testicular damage, nor were there other untoward reactions. The testicular temperatures were usually lower than the rectal temperatures and were affected by environmental temperature. No significant difference was found in the temperatures of the 2 testes although the average temperature of the left scrotum was slightly higher than that of the right. The inguinal canal temperature was higher than that of the corresponding testis in the large majority of cases. The inguinal canals were in all cases warmer than the scrotal cavities. The relation between the scrotal and testicular temperature both under spinal or inhalation anesthesia and with local anesthesia was also studied. Immersion of the hands in ice water was followed by a drop in scrotal cavity temperature, while, on the other hand, its effect on testicular temperature was variable. It is impossible to determine the average testicular temperature without taking into account the environmental temperature.
Show BibTeX
@article{testicular_temperature_in_man_g3803,
author = {Herbert F. Newman and Seymour F. Wilhelm},
title = {TESTICULAR TEMPERATURE IN MAN},
year = {1950},
}