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The fertilizing capacity of sperm may be improved by the mild heat pretreatment when marked by the presence of heat-induced hyperactivation.
A heat labile factor(s) in hFF may stimulate the motility of washed human sperm.
It was concluded that the heat-induced substance(s) from leukocytes, which being highly possible the Hsps, interfered the mobility of wash human sperm and the inhibition might be antagonized by seminal plasma.
In conclusion, testicular heat stress induced oxidative stress that led to rescuable alterations after one spermatic cycle in ejaculated sperm and also after 30 days in epididymal sperm.
The results showed that hyperactivation was induced by pretreatment of sperm with 40 degrees C heat, suggesting the involvement of heat factors in hyperactivation.

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Does sauna use have a negative effect on male fertility?5 answersSauna use does have an effect on male fertility, but the extent of the effect depends on various factors. Regular sauna use has been associated with a decrease in sperm production in sauna-naive men, but it does not seem to affect fertility in men with regular sauna habits. Scrotal hyperthermia caused by sauna exposure can significantly alter spermatogenesis, leading to impaired sperm count, motility, and chromatin structure. However, these effects are reversible and return to normal after sauna discontinuation. It is important to note that the hormonal responses to sauna exposure are short-lived and normalize soon after the sauna session. Overall, sauna use may have a temporary negative impact on male fertility, but it does not seem to have long-term effects on fertility in men with regular sauna habits.
What are the effects of very hot weather on human health?4 answersHot weather has significant effects on human health. It can increase mortality and morbidity, negatively affect mental health, and lead to adverse pregnancy outcomes. Extreme heat events are becoming more common and are projected to increase further with climate change, posing greater risks to human health. Workers exposed to extreme temperatures are prone to various health complications, including heat-related morbidities, mental health problems, and workplace accidents. Heat waves also have deep-rooted impacts on water scarcity and social issues such as women and girl child's health, primary education, and poverty. The health effects of hot weather are a global public health challenge, and timely provision of appropriate prevention advice is crucial. Overall, hot weather can have wide-ranging impacts on human health, and effective heat action plans and adaptation measures are needed to mitigate these effects.
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