Abstract:

Epigenetic factors play a critical role in regulating male reproductive function by 
influencing the expression of genes involved in spermatogenesis, hormonal balance, and the 
fertilizing capacity of sperm cells. Processes such as DNA methylation, histone modifications, and 
alterations in small non-coding RNA profiles determine the quality, motility, morphology, and 
genomic stability of spermatozoa. Disruptions in these epigenetic mechanisms may lead to 
oligospermia or azoospermia, chromatin condensation defects, and reduced fertility. External 
factors, including smoking, alcohol use, obesity, increased testicular temperature, occupational 
toxins, oxidative stress, and exposure to endocrine disruptors, further elevate the risk of epigenetic 
abnormalities. Some of these modifications may be transmitted to subsequent generations, 
highlighting the intergenerational impact of male epigenetic alterations. Expanding knowledge of 
the dynamic nature of epigenetic processes in men creates opportunities for the development of 
personalized diagnostic approaches, targeted therapies, and preventive strategies aimed at 
improving fertility potential and increasing the success of assisted reproductive technologies. 

Keywords: epigenetics, male reproduction, spermatogenesis, fertility, DNA methylation. 

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