Many men assume that gut health is just about digestion. In fact, that’s a shockingly common misconception. For instance, more than half of men don’t realize that brain fog is often due to an unhealthy gut. The gut’s microbiome influences everything from your mood to your testosterone levels.
If you want peak performance, this is your three-day gut reset: practical, science-backed, and built for men who want results.
Built different: the unique nature of a man’s gut
“All humans have similar [gut] microbiomes pre-puberty,” says world champion rower Anders Corbett, PhD. During his work as a fellow in genetics at Harvard Medical School, Corbett conducted groundbreaking research on the microbiomes of Olympic athletes.
“The introduction of sex hormones alters the microbiome,” he explains. “Men have bacteria specific to male hormones, such as testosterone and androgen. [Women have more diverse bacteria in their gut], and their bodies contain different bacterial strains that change throughout the menstrual cycle.”
Guys who cater to the unique needs of their gut level up their health and may experience a wide range of brawny benefits.
Upgrade your gut: health benefits for the bedroom and beyond
Gut-related disorders, such as constipation, affect approximately four out of 10 Canadians. A healthier gut means healthier digestion, but that’s just the start.
Rebuild general health
“Your sex hormones and gut microbiota jointly influence weight, metabolic health, and blood sugar balance,” says Alicia Galvin, RD.
Men with healthy gut microbiomes may have a lower risk for some of Canada’s most common health concerns, including obesity, type 2 diabetes, and cardiovascular disease.
Reduce inflammation
Chronic inflammation is linked to a range of problems, including insomnia, respiratory diseases, and even cancer.
“Gut microbiota affect inflammatory pathways,” says Galvin, specifically pointing to “testosterone‑driven differences in microbial composition” in men.
A healthy, balanced microbiome may help your body reduce inflammation, while an imbalance between “good” and “bad” microorganisms in your gut may raise inflammation.
Boost brain health
“The gut microbiome produces and regulates neurotransmitters such as gamma-aminobutyric acid, dopamine, and serotonin,” reports Corbett. Enhancing your gut health may help with anxiety, depression, stress, memory, and overall brain health.
Support healthy testosterone levels
Organisms in your gut help with testosterone production and hormone balance. “Research shows that testosterone actively shapes the gut microbiome, and the microbiome in turn influences hormone metabolism,” says Galvin.
Maintaining healthy levels of testosterone may support a better sex life, fertility, bone density (especially as you age), muscle endurance, and so much more.
Movement and mindfulness: small habits, big gut benefits
Your nervous system is closely entwined with your gut. Stress affects digestion and your gut, while your gut in turn influences your emotions, stress response, and brain function. Support your gut-brain axis with simple, everyday habits.
Chew thoroughly
It may seem elementary, but it’s one of the first recommendations by Shelby Marquardt, MD. Slow, mindful chewing influences gut hormones and nutrient absorption and also bolsters blood flow to the brain.
Move after eating
“Go for a 10-minute walk after meals,” says Marquardt. Just 10 minutes can offer numerous benefits, including improved blood sugar levels. Gentle movement also improves digestion and supports your microbiome.
Stretch
Stretching, especially twists and bends, may help stimulate your digestion and improve blood flow to your digestive system. Stretching can also be calming and de-stressing.
A practical three-day gut reset for men: no gimmicks, just smart science
If you want less inflammation, better energy, and real results, take a mindful approach to better digestion and gut performance.
Hit reset: Day 1
Start by “dialing back ultra-processed foods, excess alcohol, and added sugars,” advises Shelby Marquardt, MD, “and keep red and processed meat to moderate portions.”
These ingredients throw your gut out of whack. For instance, sugar may help inflammatory proteobacteria, which are organisms linked to higher rates of disease, flourish in your gut while reducing Bacteroidetes (which help with nutrition absorption and a strong gut barrier).
Want to speed things up on day one? “Layer in a gut-calming routine of a 12-hour overnight fast,” suggests Marquardt. Intermittent fasting gives your digestive system a break and may also enhance beneficial gut organisms.
Refuel and rebuild: Day 2
It’s time for strategic nutrition to support bacteria that work for the male microbiome.
Add a high-fibre ingredient to each meal starting today, recommends Galvin. These have a “prebiotic effect to feed beneficial bacteria” and strengthen your gut microbiome.
Think fruits, grains, vegetables, and legumes—plus seaweed, onions, garlic, and bananas, which are among the most effective prebiotic foods.
But don’t just feed your microbiome with those items; incorporate fermented ingredients into each meal, too. “Foods like yogurt, kefir, and kimchi support colonization of beneficial microbes,” says Galvin.
Other options include kombucha, sauerkraut, miso, tempeh, and pickled vegetables. Scientists have found that just a few weeks of eating more fermented foods significantly increases your gut’s microbial diversity.
Reinforce and recover: Day 3
Keep up with the simple dietary changes you’ve made but now zoom out for the big picture.
Your lifestyle also influences your gut:
- Move: “Daily physical activity boosts gut diversity,” notes Corbett. Studies have found that regular exercise improves gut health, and a healthier gut enhances exercise performance.
- Relax: “Deep breathing and stress reduction practices modulate the gut-brain axis and influence inflammatory signalling,” says Galvin, while chronic stress harms your gut. She suggests a daily practice of yoga or meditation, but choose any stress-reducing habit that works for you.
- Sleep: “Adequate sleep supports microbial regulation and immune balance,” reports Galvin. It’s a two-way street. Better sleep improves your microbiome, and a healthier gut leads to deeper, more restful sleep.
- Connect with nature: Nature is healing, and Galvin notes that getting outdoors and enjoying hobbies such as gardening may lead to “microbiome exposure that increases microbial diversity [in your gut].”
Don’t let your gut health be a side thought. By treating it well, you support the internal engine that powers your energy, focus, testosterone levels, and long-term health. This three-day reset, as simple as it may seem, will help you shift into gear and point you in the right direction for true men’s health.
Supplements to support the male microbiome
Bolster the male digestive system with these science-backed supplements
| Supplement | Benefits |
| omega-3s | “Eat oily fish three times per week,” recommends Shelby Marquardt, MD. Or take omega-3 supplements. These fats may increase populations of beneficial organisms in your gut and strengthen your gut barrier. |
| prebiotics | Prebiotics feed the good bacteria in the gut, helping reduce inflammation, and may support male reproductive health, including sperm quality. |
| probiotics | Probiotics populate your gut with beneficial bacteria. For men, consider a supplement containing Limosilactobacillus reuteri, which “has been shown to increase testosterone,” says Anders Corbett, PhD. |
| digestive enzymes | Digestive enzymes ensure food is broken down effectively before it reaches the colon, which can support a balanced gut environment. |
| green-tea extract | Rich in polyphenols, green-tea extract can help nurture beneficial gut bacteria and may reduce inflammation. |
| L-glutamine | This amino acid enhances your gut microbiome and improves digestion; it may also help men with muscle growth and strength. |
| curcumin | A powerful anti-inflammatory, curcumin, the active ingredient in turmeric, directly supports your gut microbiome. |
The devil is in the digestion [SUBHEAD]
Millions of men experience digestive problems. For instance, 1 in 5 Canadians struggles with irritable bowel syndrome, and Canada has one of the world’s highest rates of inflammatory bowel disease. Dietary fibre supports healthy digestion by helping regulate bowel movements, while digestive enzymes help break down food into nutrients the body can absorb more easily.
This article was originally published in the June 2026 issue of alive magazine.
