Prebiotics, probiotics, and postbiotics
Most cyclists are familiar with probiotics, live bacteria that, when consumed in adequate amounts, can improve gut health. Research shows that specific probiotic strains may strengthen gut barrier integrity, support immune function (since about 70% of the immune system resides in the gut), and even enhance recovery after intense training by reducing inflammation and muscle damage. Some strains also improve nutrient absorption, such as amino acids from protein, which is crucial for muscle repair and performance.
Prebiotics, on the other hand, are compounds, often fibres, that feed the good bacteria already living in your gut. They help probiotics thrive, but they don’t contain live organisms themselves.
Now, enter postbiotics: non-living microbial preparations that still offer health benefits. Unlike probiotics, postbiotics don’t need to stay alive to work. This makes them more stable, especially in products like protein powders or bars, where live probiotics often struggle to survive manufacturing and shelf life.
How do postbiotics work?
Postbiotics are created by intentionally inactivating microorganisms, through heat, radiation or cell lysis, while preserving their beneficial components, such as cell fragments or metabolites. Early research suggests postbiotics may support:
- Mood and fatigue reduction during heavy training blocks
- Faster recovery of strength and reduced muscle soreness
- Improved immune function and lower oxidative stress
One of the most intriguing findings is their potential to enhance protein absorption. Some probiotic strains increase amino acid uptake by upregulating digestive enzymes. Surprisingly, postbiotics can retain this enzymatic activity if processed correctly, meaning they might still boost protein absorption even after the bacteria are inactivated.
Why postbiotics could be a cyclist’s secret weapon
For cyclists, postbiotics offer several practical advantages:
Stability: Unlike probiotics, postbiotics aren’t sensitive to heat or moisture. This means they can be added to a wider range of products like energy bars, recovery shakes or even baked goods, without losing effectiveness.
Consistency: Since postbiotics don’t rely on live bacteria, there’s no risk of the organisms dying off before you consume them. This makes dosing more reliable.
Potential performance benefits: While research is still early, studies suggest postbiotics could help reduce fatigue, improve mood, and support recovery during intense training periods. For cyclists logging long hours in the saddle, these benefits could translate to better consistency and fewer off days.
Should you consider supplementing?
Postbiotics are an exciting development in sports nutrition, offering a stable, non-living alternative to probiotics with potential benefits for mood, recovery, and protein absorption. While more research is needed, especially in endurance athletes, early findings suggest they could become a valuable addition to a cyclist’s nutrition strategy. They appear to be relatively safe, especially due to the fact they are inactivated, so they may be worth giving a try.
If you’re curious and want to experiment with postbiotics, here’s how to approach it:
- Look for reputable brands: Choose products that specify the strain and inactivation method used. Transparency is key.
- Don’t change anything else: Track how your energy and digestion feel during training and recovery to see if it’s the postbiotics producing a positive change.
- Focus on whole foods first: While postbiotics show promise, a diet rich in fibre, fermented foods, and diverse plant sources remains the foundation of gut health.
