Plant Protein Could Be Linked to Higher Testosterone
A study shows that men who consume more plant-based protein may see higher testosterone levels than those who eat animal protein.
Updated on Oct. 28, 2026 in Men’s Health
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A recent study of 2,546 men links higher plant-based protein intake with increased testosterone levels, while higher animal protein consumption shows the opposite effect. These findings provide new insight into how protein sources might influence male hormonal health.
Why it matters
Understanding the potential relationship between diet and hormones can help men better navigate their nutritional choices. This research highlights that the quality of protein intake may be as significant as the total amount for long-term health.
In a cohort study of 2,546 men aged 42 to 60, researchers assessed how varying protein sources affect hormone levels. While the results suggest distinct associations with testosterone and SHBG, the study's observational design means the specific biological drivers remain unknown.
The players
University of Eastern Finland
A research institution that conducted this study on dietary protein and hormonal health.
International Journal of Food Sciences and Nutrition
A peer-reviewed publication covering research in nutrition and food science.
The details
Researchers utilized four-day food records to categorize the protein intake of participants between 1984 and 1989. They subsequently measured concentrations of total testosterone and sex hormone-binding globulin (SHBG) in blood samples. The findings indicated that dairy protein was associated with lower total testosterone and SHBG, whereas meat protein was linked specifically to lower SHBG concentrations without affecting total testosterone.
Timeline
1984-1989: Dietary intake was assessed for the study participants.
October 28, 2026: The research findings were published in the International Journal of Food Sciences and Nutrition.
Health Landscape
This study extends the University of Eastern Finland dietary cohort research, which investigates how long-term nutritional patterns correlate with metabolic health. It adds to the broader scientific inquiry into how diet-driven shifts in hormone levels may influence long-term health outcomes in men.
These findings suggest that balancing protein sources could be a factor to consider when evaluating your overall nutritional profile. It is worth discussing your specific dietary habits and any concerns regarding hormone levels with your physician.
The takeaway
While diet is only one factor in hormonal regulation, this study suggests that the source of your protein may influence testosterone markers. Consult with your doctor or a registered dietitian if you are looking to optimize your nutrition for your specific health goals.
Further reading
For more information on dietary habits and hormonal wellness, visit Men’s Health.
More information
View the complete results in the study published in international journal.
Source note: This article includes information reported by News-Medical.
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