This Dead Simple Daily Habit Boosts Brain Function—Here’s the Science
Recently, my dad sent me a study that got him super excited. He eats Human Food Bar every day for the gut and metabolic benefits, but this research showed it could be doing even more for him than he realized.
When he saw the results, he texted me immediately. Here’s what he said:
“I’ve been eating Human Food Bar every day for the gut and metabolic benefits, but knowing it could actually boost my brain function too? That’s a game changer.”
My dad enjoying his favorite flavor.
My dad’s approach to staying healthy and sharp as he ages includes a lot of smart choices—Human Food Bar is one of them. So when he saw this new study from King’s College London, it wasn’t just interesting—it was personal.
The Study: Inulin and Cognitive Function
Researchers at the world-renowned King’s College London conducted a 12-week study on inulin, a prebiotic fiber found in chicory root. The study focused on people 60+ and found that daily inulin intake led to real improvements in memory and cognitive function.
The key findings? Participants who took 3.375 grams each if of inulin and fructo-oligosaccharides (FOS) daily showed:
- Better visual memory and learning – They performed better on the Paired Associates Learning test, a sensitive measure of early cognitive decline.
- Faster reaction times – They responded more quickly in tasks requiring quick decision-making.
- Improved processing speed – Their brains processed information more swiftly and accurately.
While the study focused on people 60+, there’s no reason to believe these benefits are age-restricted. Prebiotic fiber plays a critical role in gut and brain health at any age.
Understanding the Mechanism: The Gut-Brain Axis
The researchers believe these improvements are linked to the gut-brain axis—the communication network between your gut microbiome and your brain.
The gut talks to the brain via microbes, fiber, and powerful signaling molecules.
Inulin acts as fuel for beneficial gut bacteria, particularly Bifidobacterium species. As these microbes break down inulin, they produce short-chain fatty acids (SCFAs) and other metabolites that may influence brain function by:
- Reducing inflammation
- Enhancing the production of neurotransmitters
- Strengthening the gut lining and overall metabolic health
This gut-to-brain signaling could explain the measurable improvements in memory and cognitive speed observed in the study.
How Human Food Bar Fits In
Every Human Food Bar contains around 8 grams of inulin and FOS from chicory root. That means if you’re already eating HFB daily, you’re getting a powerful dose of the same brain-boosting prebiotic fiber.
And if you haven’t tried HFB yet—this is just one more reason to consider adding it to your routine.
Other Dietary Sources of Inulin
In addition to Human Food Bar, you can find inulin in a variety of whole foods, including:
- Chicory root (the richest natural source)
- Jerusalem artichokes
- Garlic
- Onions
- Leeks
- Asparagus
- Bananas
Adding these foods to your diet can help support a healthy gut—and potentially a sharper mind.
A Lifestyle Built for Longevity
My dad’s been thinking about long-term health for years. One of our favorite ways to stay connected and energized is getting outside for a good ride. Here’s a photo of us biking on one of our favorite trails on Mt. Tamalpais in the Bay Area:
If you’re looking for a simple, science-backed way to support your brain, gut, and overall wellness, adding Human Food Bar to your daily routine might be one of the smartest choices you make.
