Gut health affects sexual function. Changes in the intestinal microbiota can influence hormones, inflammation, blood circulation, metabolism, and even emotional factors related to libido and erection.
Gut health can influence sexual function mainly through its impact on hormonal health.
The intestinal microbiota — the collection of microorganisms that inhabit the digestive tract — also plays an important role in regulating sexual hormones.
Below, we explain how the intestinal microbiota can impact testosterone levels, libido, and erectile function. We also address the relationship between gut health and the vascular system, as well as the importance of the gut-brain axis in hormonal, emotional, and sexual balance.
Does gut health affect sexual function?
Yes, gut health can affect sexual function.
The intestine influences essential processes for sexual health, such as nutrient absorption, and also participates in the production of substances that contribute to hormonal balance, immune system function, mood regulation, and communication with the brain.
How does gut health influence testosterone?
The relationship between gut health and testosterone is linked to the intestine’s role in regulating important processes for the production and balance of this hormone. This occurs in 3 different stages:
1) Nutrient absorption
Much of the nutrients are absorbed in the intestine through a layer of cells that functions as a selective barrier, allowing the passage of essential substances into the bloodstream.
Therefore, it is essential that the intestine is healthy to ensure adequate absorption of nutrients important for testosterone production, such as zinc, magnesium and vitamin D.
2) Hormonal metabolism
Hormonal metabolism involves all processes related to the production, regulation, and use of hormones, including testosterone.
The intestinal microbiota — a collection of microorganisms, mainly bacteria, that live in the gastrointestinal tract — plays an important role in maintaining male hormonal health.
A healthy intestine acts as an efficient barrier, promoting nutrient absorption and reducing the entry of harmful substances. This helps reduce inflammatory processes and contributes to the proper functioning of the endocrine system.
On the other hand, intestinal dysbiosis — an imbalance of the microbiota caused by poor diet, antibiotic use, or other factors — can increase inflammation and interfere with hormonal balance, with possible impacts on sexual function.
Impacts on male libido
The intestine influences libido because it is involved in mechanisms related to male sexual health, especially through its relationship with testosterone, the primary male sexual hormone.
Recent studies suggest that the connection between intestinal microbiota and libido occurs through three main pathways:
- Modulation of the hypothalamic-pituitary-testicular (HPT) axis: the system that regulates testosterone production by the testes.
- Metabolism of sexual hormones: the participation of intestinal bacteria in the processing and proper use of these hormones.
- Hormonal recycling: the microbiota can influence the reabsorption of sexual hormones in the intestine, reducing their elimination and helping to maintain their availability in the body.
Since testosterone plays a central role in libido and sexual response, changes in gut health can impact hormonal availability and, consequently, male libido.
Can intestinal problems cause erectile dysfunction?
Although they are not a direct cause of erectile dysfunction, intestinal problems can contribute to changes in sexual function by increasing the risk of chronic inflammation and affecting vascular health.
How does this happen?
Imbalance of the intestinal microbiota can increase systemic inflammation and damage the endothelium, the structure responsible for the proper functioning of blood vessels.
This can reduce the production of nitric oxide, a substance essential for the dilation of penile arteries and for erection.
Furthermore, inflammatory and metabolic conditions such as diabetes and high blood pressure can also worsen this process.
Main associated intestinal diseases
- Intestinal dysbiosis: microbiota imbalance that can increase inflammation and affect hormonal balance.
- Irritable bowel syndrome: impacts physical and emotional well-being, and can indirectly affect sexual function.
- Crohn’s disease: a chronic inflammatory disease that causes fatigue, weight loss, and reduced sexual drive.
- Ulcerative colitis: chronic intestinal inflammation that can generate systemic effects such as anemia and fatigue.
Impact on sexual function
These conditions can influence sexual health mainly through 3 mechanisms:
- increased systemic inflammation;
- hormonal changes;
- impaired blood circulation.
Although they are not direct causes, they can act as contributing factors to erectile dysfunction in some cases.
Related: How to increase penile blood circulation and what benefits it can bring
When to seek medical help?
If there are persistent intestinal symptoms, reduced libido, or difficulties with erection, it is advisable to seek medical evaluation. These signs may indicate changes that affect sexual health and quality of life.
Medical consultation helps identify possible associated causes, such as inflammation, hormonal changes, or vascular problems, allowing for a more accurate diagnosis and the definition of appropriate treatment.
For more information about evaluation and treatment options suitable for your case, it is recommended to consult a specialist in urology or gastroenterology.
