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Taking a GLP-1 medicine for weight reduction might enhance male fertility, in response to specialists.
Analysis introduced this week at ENDO 2026, the Endocrine Society’s annual assembly in Chicago, explored how obesity is strongly linked to fertility issues in males.
Extra weight can contribute to dysregulation of the hypothalamic-pituitary-gonadal (HPG) axis — the hormone system that regulates testosterone manufacturing — and useful hypogonadism, a situation during which testosterone ranges are abnormally low due to disrupted hormone signaling. These modifications also can impair semen high quality.
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The researchers evaluated how GLP-1 weight-loss medication impression reproductive hormones and metabolic outcomes, analyzing data of men between the ages of 18 and 65 who have been taking one of many drugs, in response to a press launch.
The systematic overview of 5 randomized managed trials centered on measuring testosterone, mind hormones concerned in testosterone and sperm manufacturing, and a protein that carries intercourse hormones within the blood. Semen high quality, weight and BMI, cholesterol and blood sugar have been additionally measured.
Males with weight problems and low testosterone linked to weight problems might expertise improved testosterone, sperm high quality and metabolic heath whereas taking a GLP-1, the research discovered. (iStock)
The outcomes recommended that GLP-1 medications don’t suppress male hormones. Males with weight problems and low testosterone linked to weight problems might expertise improved testosterone, sperm high quality and metabolic well being, particularly throughout weight reduction.
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In a single four-week research, dulaglutide confirmed no important modifications in reproductive hormones or sexual function.
In a separate 16-week trial, liraglutide improved hormones in overweight males with useful hypogonadism, which means low testosterone was seemingly associated to weight problems. The overview discovered that liraglutide was higher for well being outcomes than hormone alternative remedy.
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One other liraglutide research reported improved sperm focus and rely.
The research authors concluded that GLP-1s “don’t seem to acutely suppress the male HPG axis and should enhance reproductive hormones and semen parameters in overweight hypogonadal males, largely throughout the context of weight reduction.” (iStock)
A 24-week trial of semaglutide, identified commercially as Ozempic and Wegovy, noticed enchancment in sperm form and unhealthy ldl cholesterol, whereas preserving whole testosterone.
As solely 5 trials have been included, the small proof base suggests extra analysis is critical to show additional affiliation.
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In an summary of the analysis, the authors summed up that GLP-1s “don’t seem to acutely suppress the male HPG axis and should enhance reproductive hormones and semen parameters in overweight hypogonadal males, largely throughout the context of weight reduction.”
“Nonetheless, proof stays restricted and heterogeneous, underscoring the necessity for bigger RCTs explicitly powered to evaluate male reproductive outcomes,” they wrote.
“This supplies early proof that GLP-1 drugs taken by overweight males with hypogonadism/low testosterone (low T) improves testosterone ranges,” one physician mentioned. (iStock)
Dr. Anthony Puopolo, males’s well being skilled and lead medical supplier for RexMD, mirrored on these findings in an interview with Fox Information Digital.
“This supplies early proof that GLP-1 drugs taken by overweight males with hypogonadism/low testosterone (low T) improves testosterone ranges,” he mentioned.
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Whereas extra analysis is critical, Pupolo, who was not concerned within the research, shared his optimism about how GLP-1s can play a task in enhancing male fertility.
“If this discovering continues to realize proof, GLP-1s might be a higher possibility for low T than testosterone alternative remedy (TRT) in overweight males – as GLP-1 drugs protect fertility, whereas TRT tends to be dangerous to male reproductive/sperm perform,” he added.
