Nora Cavani - Molecular Biologist & Gut Health Expert

Nora Cavani - Molecular Biologist & Gut Health Expert Science-backed solutions for gut health to improve your skin, digestion, weight, longevity and more

03/06/2026

Most people are told colic is “normal.”

Just a phase, something babies grow out of.

But researchers studying the gut-brain axis are now asking a much bigger question:

What if colic is sometimes an early sign of immune and gut dysfunction?

A new long-term study following more than 1,200 children found infants with colic had significantly higher risks of food allergies later in childhood and adolescence and the findings were specific.

Researchers found infants with colic had:

👉 1.7x greater risk of food allergies in early childhood
👉 2.1x greater risk of peanut allergy in adolescence
👉 2.6x greater risk of tree nut allergy
👉 higher food-specific IgE sensitization

What’s important is that excessive crying alone was NOT associated with the same outcomes. Colic specifically showed the strongest relationship.

Researchers now believe infant colic may involve:

🦠 gut microbiome disruption
🦠 immune activation
🦠 increased gut permeability
🦠 inflammation affecting the gut-brain axis

And honestly… this is why I get frustrated when parents are dismissed instead of listened to.

Because researchers are increasingly studying colic as more than “just crying.”

They’re studying it as a possible early marker of immune and microbiome dysregulation.

This does NOT mean every baby with colic will develop allergies, but it does mean scientists are taking these early-life symptoms far more seriously than they used to.

And this is exactly why the first years of microbiome development matter so much.

Comment “GUT” and I’ll send you the free webinar where I explain what scientists are now discovering about infant gut health, eczema, allergies, and the microbiome 👇

References:

Switkowski KM et al.
“Associations of Colic and Excessive Crying in Infancy with Food Allergy Outcomes in Childhood and Adolescence.”
The Journal of Pediatrics. 2026.

02/06/2026

Most people are told to “eat more fiber.”

But researchers studying the gut microbiome discovered different fibers feed bacteria in completely different parts of the colon.

And this matters way more than most people realise.

Because different gut bacteria produce different compounds depending on:

→ where fermentation happens
→ how fast fiber breaks down
→ which microbes are being fed

Researchers now categorize many fibers as:

⚡ fast fermenting
⚖️ medium fermenting
🐢 slow fermenting

Fast fermenting fibers tend to be broken down earlier in the colon and are often associated with:

→ digestion moving faster
→ less heaviness after eating
→ quicker bacterial fermentation

Foods commonly studied include:

🍌 ripe bananas
🧄 garlic
🧅 onions
🍎 apples
🌽 corn husk
🌱 asparagus

Slow fermenting fibers travel further through the gut before bacteria break them down.

And researchers believe these fibers may play an important role in:

→ fullness
→ cravings
→ metabolic health
→ blood sugar regulation

Foods commonly studied include:

🌽 corn
🫘 black beans
🥬 quinoa
🌰 chia seeds
🥔 cassava
🥜 almonds

Then there are medium fermenting fibers that sit somewhere in between. What frustrates me is that wellness culture talks about fiber like it’s one single thing.

Different fibers feed different bacteria.

Different bacteria produce different metabolites and your microbiome responds differently depending on the type of fiber you repeatedly eat.

This is exactly why researchers studying the microbiome focus on diversity, not just “high fiber.”

Comment “GUT” and I’ll send you the free webinar explaining what scientists are now discovering about gut bacteria, digestion, inflammation, and metabolic health 👇

References:
Holscher H. “Dietary Fiber and Prebiotics and the Gastrointestinal Microbiota.” Nutrients. 2017.
Calatayud M. “Comparative Effect of 22 Dietary Sources of Fiber on Gut Microbiota Activity.” Frontiers in Nutrition. 2021.
Das S. “The Role of Different Dietary Fibers in Modulating Human Gut Microbiota.” 2021.

A pilot study isn't a revolution, but the signal is hard to ignore 🥗Every time researchers ask the question properly, fo...
02/06/2026

A pilot study isn't a revolution, but the signal is hard to ignore 🥗

Every time researchers ask the question properly, food keeps moving the needle on eczema in weeks rather than years.

The mechanism is sitting in plain sight... 🧬

Fibre feeds the bacteria that produce your body's strongest anti-inflammatory signals, saturated fat feeds the bacteria that drive flares, and your skin sits downstream of the whole exchange.

It's why dermatology-only protocols leave so many people stuck, and why flare-prone women so often see their skin change once they finally work on the gut underneath it.

If you want the full picture of which foods and which strains are doing the heavy lifting, that's exactly what I'm walking through in the free webinar, just comment GUT and I'll send you the details...

01/06/2026

Most women think coffee only affects energy because of caffeine...

But researchers studying the gut-brain axis are finding coffee may influence stress and mood through the microbiome too.

A new study published in Nature Communications compared regular coffee drinkers to non-drinkers using psychological assessments, stool samples, urine testing, and blinded caffeinated vs decaf interventions.

Researchers found both caffeinated and decaf coffee were associated with:

👉 lower perceived stress
👉 lower depressive symptoms
👉 lower impulsivity

They also observed differences in gut bacteria linked to psychological wellbeing.

This matters because your gut microbiome communicates directly with your brain through the gut-brain axis.

Here are 7 things women with healthier gut-brain connections often do differently:

1️⃣ prioritize sleep because poor sleep disrupts the microbiome
2️⃣ eat enough fiber to support beneficial bacteria
3️⃣ stop fearing carbs because gut bacteria depend on them
4️⃣ reduce ultra-processed foods linked to inflammation and lower microbial diversity
5️⃣ stop drinking alcohol “for health” because it can negatively affect the gut barrier
6️⃣ manage chronic stress because stress changes gut bacteria composition
7️⃣ focus on microbial health, not just calories

Researchers believe coffee compounds may also interact with:

🦠 gut bacteria
🦠 neurotransmitter pathways
🦠 inflammation
🦠 microbial metabolites

Meaning:

Coffee’s effects may not just be happening in your brain. They may also be happening in your microbiome.

Your gut bacteria influence far more than bloating.

Comment “GUT” and I’ll send you the free webinar explaining what scientists are now discovering about the gut-brain connection 👇

References:
Boscaini S. et al. Nature Communications. 2026.
APC Microbiome Ireland / University College Cork.
https://vist.ly/566js

30/05/2026

At 49, perimenopause can feel like your body has stopped responding to everything.…

The bloating, inflammation, weight that won’t move, exhaustion, and every lab result keeps coming back “normal.”

What researchers are now discovering is that perimenopause doesn’t just affect hormones.

It also changes the gut microbiome, gut barrier, and digestion 👇

1️⃣ Lower microbial diversity

Researchers found estrogen decline may reduce microbiome diversity and shift bacterial balance.

2️⃣ Slower gut motility

Scientists discovered hormonal shifts can slow digestion and contribute to constipation and bloating.

3️⃣ A weaker gut barrier

Studies now show estrogen also helps maintain gut barrier integrity.

As hormone levels change, intestinal permeability may increase, allowing more inflammatory compounds to interact with the immune system.

4️⃣ More inflammation

Researchers are studying how menopause-related microbiome shifts may influence inflammation pathways throughout the body.

5️⃣ Increased gut sensitivity

The gut-brain axis becomes more reactive during perimenopause, especially when stress and sleep are disrupted.

This is why so many women feel like their body suddenly “stops working.”

Because the issue is often bigger than calories or willpower.

Researchers are now realising the gut may be one of the missing layers in the menopause conversation.

Comment “GUT” and I’ll send you the free webinar explaining what scientists now understand about the gut-hormone connection 👇

References:
Peters et al. Int J Womens Health. 2022.
Shieh et al. JCI Insight. 2020.
Nieto et al. npj Women’s Health. 2025.
Langen et al. Am J Physiol Gastrointest Liver Physiol. 2011.

29/05/2026

You think you’re doing everything right for your gut…

But some of the most normalized “gut health” habits online are completely disconnected from what researchers are actually studying.

Here are 5 things scientists are increasingly questioning 👇

1️⃣ Constantly snacking all day

Researchers studying the microbiome found grazing patterns may affect microbial diversity, blood sugar regulation, and gut motility.

2️⃣ Drinking “healthy” sweetened drinks nonstop

Some emulsifiers and artificial sweeteners are now being studied for their effects on gut bacteria and the gut barrier.

3️⃣ Taking random probiotics without strain specificity

Scientists don’t study probiotics as one category.

Different strains do completely different things.

🦠 Lactobacillus rhamnosus is not the same as Bifidobacterium infantis.

4️⃣ Ignoring stress and sleep

Researchers found stress hormones directly influence the gut microbiome and gut barrier integrity.

Your nervous system and your microbiome are constantly communicating.

5️⃣ Thinking bloating is “normal”

Scientists studying the gut microbiome discovered bloating can sometimes be linked to microbial imbalance, fermentation patterns, gut motility, or food intolerances.

Not just “sensitive digestion.”

The problem with social media gut advice is that most of it ignores the actual science.

And the science is moving FAST.

Comment “GUT” and I’ll send you the free webinar explaining what researchers now understand about the microbiome 👇

References:
Chassaing et al. Nature. 2015.
Cryan & Dinan. Nat Rev Neurosci. 2012.
Zmora et al. Cell. 2018.
Mayer et al. Nat Rev Gastroenterol Hepatol. 2015.

So inspiring to join the Awards 🏆The award recognized scale-up companies started in the Nordics countries. That means c...
29/05/2026

So inspiring to join the Awards 🏆

The award recognized scale-up companies started in the Nordics countries. That means companies that were just ideas some years ago and are now scaling across multiple markets 🌟

It’s incredibly inspiring to follow these journeys and to be mentored by incredible entrepreneurs.

Maybe .co will be there next year? 👀

28/05/2026

Researchers are increasingly studying how environmental chemicals may interact with the microbiome, hormones, and immune system…

Including glyphosate.

A 2024 review examining glyphosate exposure found researchers are now investigating its potential role as an endocrine disruptor, especially in the reproductive system.

Scientists are also studying how glyphosate exposure may affect:

🦠 gut bacteria composition
🦠 intestinal barrier integrity
🦠 inflammation pathways
🦠 hormone signaling
🦠 metabolic health

Why does this matter?

Because the gut microbiome is involved in estrogen metabolism, immune regulation, and inflammation.

Which means hormone symptoms may not just be about hormones alone.

Researchers now call this connection the estrobolome, the collection of gut bacteria involved in estrogen regulation.

This is exactly why microbiome science is becoming such a major part of the menopause and hormone conversation.

Comment “GUT” and I’ll send you the free webinar explaining what researchers now understand about the gut-hormone connection 👇

References:

Galli et al. Front Toxicol. 2024.
Baker et al. Trends Endocrinol Metab. 2017.
Kwa et al. J Natl Cancer Inst. 2016.

27/05/2026

Researchers studying the microbiome keep finding the same pattern:

The healthiest gut microbiomes are usually linked to diets rich in BOTH fiber and polyphenols, not just one.

And scientists now believe different parts of the colon are fed differently.

Here’s what most people are never told 👇

Fast-fermenting fibers like inulin get used early in the colon.

But resistant starch ferments more slowly, meaning it can reach deeper parts of the gut where bacteria produce compounds like butyrate.

Why does that matter?

Because butyrate is one of the most studied microbial metabolites linked to:

🦠 gut barrier integrity
🦠 immune regulation
🦠 inflammation control
🦠 colon cell health

Researchers are also studying how polyphenols may support bacteria like Akkermansia muciniphila — one of the microbes repeatedly associated with metabolic and gut health.

This is exactly why scientists are moving away from the idea that “fiber” is just one thing.

Different microbes need different fuel sources.

And most people are massively underestimating how complex the microbiome actually is.

Comment “GUT” and I’ll send you the free webinar explaining what researchers now understand about feeding the microbiome 👇

References:

ISAPP Consensus Statement. Nat Rev Gastroenterol Hepatol. 2026.
Makki et al. Cell Host Microbe. 2018.
Wu et al. Science. 2011.

26/05/2026

Researchers studying the gut-skin axis discovered something most people are never told:

Your skin barrier and your gut barrier are deeply connected.

When the gut barrier becomes disrupted, bacteria and inflammatory compounds can interact more directly with the immune system.

Scientists believe this may contribute to chronic inflammation involved in conditions like eczema.

And researchers have repeatedly found differences in the gut microbiome of people with eczema compared to healthy controls.

Some of the bacteria most commonly studied include:

🦠 Staphylococcus aureus
🦠 Bifidobacterium
🦠 Lactobacillus

This is why so many researchers are now studying eczema as more than just a “skin problem.”

Because for many people, the inflammation may not be starting where the symptoms appear.

Comment “GUT” and I’ll send you the free webinar explaining what scientists now understand about the gut-skin connection 👇

References:

Akbar & Shukla. Front Microbiol. 2020.
Byrd et al. Nat Rev Microbiol. 2018.
Lee et al. Allergy Asthma Immunol Res. 2018.

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