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Summary: A new study reveals that metabolic health, particularly modest increases in blood sugar, play a more important role than age or testosterone in decreasing sexual and reproductive function in men. The researchers tracked 117 healthy men for six years, evaluating hormones, semen quality, erectile function and blood sugar.
While hormonal levels and semen parameters remained normal, the high level of blood sugar correlated with a reduction in sperm motility and erectile performance. These findings suggest that changes in lifestyle and medical interventions aimed at metabolic health can help preserve male sexual well -being as men grow old.
Key facts:
Impact on blood sugar: even minor increases in blood sugar levels, deteriorated sperm motility and erectile function, despite being below diabetic thresholds. The understanding of testosterone: testosterone influenced libido, but was not directly linked to erectile performance. Applicable prevention: Maintenance of metabolic health can help men maintain sexual and reproductive health in advanced age.
Source: Endocrine Society
Metabolic health factors, including small increases in blood sugar, are the main drivers of change in reproductive systems and sexual functioning of aging men, according to a study presented on Saturday in endo 2025, the annual meeting of the endocrine society in San Francisco, California.
“Although the age and testosterone levels have long been considered a momentum for the decrease in the sexual health of men, our research indicates that these changes correlate more closely with modest increases in blood sugar and other metabolic changes,” said Michael Zitzmann, MD, Ph.D., a professor and doctor of medicine at the University Hospital in Muyenster, Germany.
“This means that men can take measures to preserve or relive their reproductive health with lifestyle elections and appropriate medical interventions.”
These conclusions follow a long -term study of healthy men (without diabetes mellitus, heart disease and/or cancer) from 18 to 85 years that began in 2014 with 200 participants and concluded in 2020 with 117 participants.
The researchers studied progressive changes in the semen and hormonal profiles of the participants, erectile functioning and metabolic health (BMI and blood sugar levels marked by the HBA1C test).
The results indicated that over time hormonal levels and semen parameters remained largely within normal ranges. However, the sperm movement and erectile function decreased in men with minimally high blood sugar levels that were below the 6.5%HBA1C diabetes threshold.
The study also found that while testosterone levels did not have a direct impact on erectile function, they correlated with the evaluation of the participants libido.
“We hope that the information obtained from this study helps doctors and their patients formulate effective male sexual health maintenance plans,” Zitzmann added.
“Now we know that it is in our being able to retain sexual and reproductive well -being in men, even as they age.”
Financing: This research was carried out as part of the study of fame 2.0.
About this news of metabolism and sexual health research
Author: Colleen Williams
Source: Endocrine Society
Contact: Colleen Williams – Endocrine Society
Image: The image is accredited to Neuroscience News
Original Research: The findings will be presented in ENDO2025
