Adolescent stress linked to reduced fertility in adulthood- Study

Published On 2024-05-13 02:30 GMT   |   Update On 2024-05-13 07:30 GMT
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According to research presented at the 26th European Congress of Endocrinology, individuals exposed to moderate and repeated stress during adolescence may have reduced fertility in adulthood.

The study sheds light on the harmful effects that early-life stress has on health and could help to uncover future prevention strategies for children and adolescents.
During adolescence, stress triggers the release of hormones like cortisol, which can disrupt reproductive processes. Prolonged exposure to stress hormones can impair the development and function of reproductive organs, affecting fertility later in adulthood.
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Additionally, chronic stress may disrupt menstrual cycles in females and sperm production in males, further compromising fertility. Moreover, stress-induced changes in behavior and lifestyle, such as poor diet and sleep patterns, can also contribute to fertility issues in adulthood.
In this study, researchers from the V.P. Komisarenko Institute of Endocrinology and Metabolism of the National Academy of Medical Science of Ukraine, examined male and female rats, aged 6 months, after individually placing about half of them in enclosed spaces for one hour every morning for two weeks during adolescence (30–45 days old).
They compared the rats who had been exposed to these stressful conditions to the control group and found that chronic stress during puberty delayed sexual maturity in females, and males gained weight more slowly. In adult males, sperm count fell by 25.9%, some sperm were abnormally shaped and sluggish or became immobile, and the breathing process by which sperm cells derive energy slowed down.
Additionally, males had almost two times lower levels of corticosterone – the main stress hormone in rats, equivalent to cortisol in humans.
“Our work is the first to show that even moderate and repetitive stress in adolescence has a long-lasting negative impact on the endocrine system of reproduction and adaptation of the body to changing living conditions,” said lead investigator, Professor Aleksander Reznikov.
“The results make it possible to predict the development of anomalies in reproduction and bodily adaptation systems and are the basis for finding methods for their prevention. We discovered for the first time that lipid peroxidation- a process in which oxidants, like free radicals attack lipid membranes of cells and eventually damage them- in the ovaries and testes, was significantly increased. This, however, needs further investigation,” he added.
Reference: Chronic stress during adolescence may reduce fertility in adulthood: EUROPEAN SOCIETY OF ENDOCRINOLOGY
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