Sperm are fine-crafted little machines that require the precise temperature of 4 degrees cooler than body temperature for proper development. Heat is among the top causes of reduced fertility in men. The sources of heat to the family jewels range from tighty whities to laptops to fevers and anatomy issues. All of these things can impact your fertility. Are you cooking your balls? As mentioned in our article on sperm production , sperm are finely crafted little baby making machines.
Heat and Male Fertility | Causes of Male Infertility
Higher temperatures lead to an increase of testicular metabolism that results in spermatic damage. Oxidative stress is the main factor responsible for testicular damage caused by heat stress. The aim of this study was to evaluate lasting effects of heat stress on ejaculated sperm and immediate or long-term effects of heat stress on epididymal sperm. We observed decrease in motility and mass motility of ejaculated sperm, as well as an increase in the percentages of sperm showing major and minor defects, damaged plasma and acrosome membranes, and a decrease in the percentage of sperm with high mitochondrial membrane potential in the treated group until one spermatic cycle.
Sperm cells are some of the most sensitive cells in the body. In fact, sperm are so sensitive to heat that the testicles hang outside of the body to preserve sperm from less than ideal body temperature. Sperm thrive in lower temperatures. This means that even small sources of heat can start to add up and damage your sperm count.
Author information: 1 Dpto. Evidence exists to suggest detrimental effects of heat stress on male fertility. This study was designed to assess the effects of scrotal heat stress on mature and developing sperm in a mouse model. After receiving shock heat treatment 42 degrees C for 30 min , mature spermatozoa were recovered from the epididymis hours 6 or Days 7, 14, 21, 28, 60 later, to determine the variables: number of spermatozoa, sperm viability, motility and progressive motility, sperm DNA integrity as established by the TUNEL method, embryo implantation rate, and sex ratio of the fetuses conceived using the heat-exposed spermatozoa.