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Where Your Gut-Brain Dietary Habits Actually Start

Your Gut-Brain Diet Profile

Where Your Gut-Brain Dietary Habits Actually Start

Item answers and results stay on this device

A structured self-reflection, not a diagnostic.

A 20-scenario self-report that groups your selected answer points across five editorial dimensions. It is not a validated measure of an underlying trait.

20 scenarios5 groups4 forced choicesno neutral option

Topic context from the cited source; it does not validate this questionnaire or its score thresholds.

Zandifar et al. (2025)

What your answers coverDietary Fibre DiversityEating a wide variety of fibre-rich plants, legumes and whole grains.Fermented Food HabitsEating fermented foods like yoghurt and kimchi regularly and variously.Stress-Gut AwarenessNoticing and managing the link between stress and your digestion.Disruption HistoryFacing disruptions to your gut from antibiotics or major diet changes.Mood-Gut NoticingNoticing links between what you eat and how you feel.

Gut-Brain Diet Self-Reflection: How Does Your Plate Match the Research?

Twenty forced-choice scenarios are summed into editorial answer-score bands; the result does not diagnose or measure an underlying trait.

~7-9 min · Item answers and results stay on this device · Links created by this assessment contain no scores

Answer for what you actually ate and how you actually felt, not the diet you're about to start.

This assessment is a structured self-reflection tool and educational resource — it is not a validated diagnostic and is not a substitute for clinical evaluation. Every dimension insight references peer-reviewed literature for educational context only. If you have concerns about your health, consult a qualified professional. Self-report instruments of this kind have no validated retest interval; the four-to-six-week Second Reading is a sensible practice, not a clinical standard.

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This assessment is a structured self-reflection tool and educational resource — it is not a validated diagnostic and is not a substitute for clinical evaluation. Every dimension insight references peer-reviewed literature for educational context only. If you have concerns about your health, consult a qualified professional.

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Gut-Brain Diet Self-Reflection: How Does Your Plate Match the Research?

This literature-informed structured self-reflection adds up what you select about five food-and-lifestyle-habit groups — dietary fibre diversity, fermented food frequency, stress-gut awareness, disruption history, and mood-digestive noticing. It cannot detect a microbiome state, and it cannot tell you whether your gut is limiting your cognition or mood.

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How regularly do you eat legumes — lentils, beans, chickpeas, or peas — and whole grains such as oats, brown rice, barley, or wholegrain bread?
- Rarely or never — neither appears consistently
- One category, occasionally
- One category most days
- Both categories appear consistently most days
When you're deciding what plant foods to buy or cook each week, which of these best describes your approach?
- I keep it simple and consistent — the same trusted handful of plant foods each week, fewer than about 10 different types, rather than experimenting
- I mostly repeat my regulars but occasionally branch out — probably 10 to 20 different plant food types across a typical week
- I make a real effort to mix things up — somewhere around 20 to 30 different plant food types most weeks
- I deliberately keep pushing past my usual list — more than 30 different plant food types most weeks, even when it would be easier to repeat what I know
How consistently do you eat prebiotic-rich foods — onions, garlic, leeks, asparagus, oats, or bananas — that provide fermentable substrates specifically for beneficial gut bacteria?
- Rarely or never
- Once or twice a week
- Most days, at least one source
- Daily — prebiotic foods appear consistently across most meals
How deliberately do you vary the types of plant foods that provide different forms of dietary fibre — for example, soluble fibre from oats, apples, and legumes; insoluble fibre from whole grains and vegetables; and prebiotic fibre from onions and garlic — rather than relying on one or two sources for all your fibre?
- Rarely consider it — eat whatever is available
- Vaguely aware — include some fibre but don't vary it deliberately
- Somewhat deliberate — include several fibre types but not all consistently
- Deliberately varied — actively mix multiple fibre types across most days
How consistently do you eat fermented foods — plain yogurt, kefir, sauerkraut, kimchi, miso, or similar foods that contain live cultures?
- Rarely or never
- Occasionally — a few times a month
- A few times a week
- Daily or most days
How varied is the range of fermented foods you include — do you stick mainly to one type such as yogurt, or do you regularly rotate through several fermented foods such as kefir, sauerkraut, kimchi, and miso?
- None, or only one type
- Two types, mainly one
- Three or four types rotated somewhat
- Five or more types rotated regularly
Fermented foods like yogurt, kefir, sauerkraut, kimchi, or miso — which of these best describes how they show up in your week?
- I stay flexible — I have fermented foods whenever the mood strikes, rather than tying myself to a fixed routine
- I go through phases — regular for a while, then it drops off, then it picks back up
- I've built this into a fairly steady habit over the past several months
- I attach it to the same anchor every single day — a fixed routine I've kept up all year, not something I rely on remembering
How deliberately do you include fermented foods as part of a considered gut health approach — versus eating them only when convenient or not thinking about them at all?
- Never — gut health is not part of my dietary thinking
- Occasionally — when I happen to think of it
- Mostly deliberate, with some unplanned gaps
- A consistent, deliberate daily habit
How aware are you of the two-way relationship between psychological stress and digestive function in your own body — for example, noticing that stress tends to affect your gut, or that your gut state influences your mood?
- Not aware — I don't connect stress with my digestion
- Vaguely aware — heard about it but rarely notice it in myself
- Somewhat aware — notice the connection but don't actively manage it
- Well aware — I manage stress as part of my gut-health approach
When stress builds up during the week, which best matches how you typically handle it?
- I push through it — I don't build in scheduled recovery time, I just handle stress as it comes and keep going
- I only turn to stress management once things get bad enough that I have to
- I have some regular habits most weeks, but it isn't a full, structured routine
- I follow a structured, near-daily routine — scheduled activity, breathing practice, sleep protection, or leisure time — rather than relying on toughing it out
When you are under significant stress, how does it affect your eating habits — do you tend to rush or skip meals, reach for highly processed comfort foods, or eat regularly and mindfully regardless of pressure?
- Regularly rush, skip meals, or comfort-eat heavily processed foods
- Often rush meals or turn to comfort foods under stress
- Stress affects my eating somewhat but I maintain some regularity
- Eat mindfully and regularly even under significant stress
How familiar are you with the evidence that the gut and brain communicate continuously — and that the microbiome participates actively in this communication through multiple physiological pathways?
- Unfamiliar — haven't considered the microbiome relevant to brain function
- Vaguely familiar — heard about it but know little of the evidence
- Broadly familiar — understand the concept and some of the research
- Well-informed — have engaged with the evidence and apply it in my habits
Thinking about the past two years, how often have you taken a prescribed course of antibiotics?
- Three or more courses in the past two years
- Two courses
- One course
- None in the past two years
After a course of antibiotics, which best describes how you typically approach the weeks that follow? If you haven't taken antibiotics recently, choose the answer that says so.
- I trust my body to bounce back on its own — I don't change what I eat, I just let things return to normal naturally
- I'm aware post-antibiotic recovery diet is a thing, but I don't actually change anything
- I usually make a few changes — more vegetables, maybe a fermented food or two
- I consistently increase fermented foods, legumes, plant variety for weeks, or haven't taken antibiotics recently
How often do you go through significant dietary disruptions — such as extended periods of very limited food variety, long travel eating, highly restrictive diets, or major illness — that may alter your gut microbiome composition?
- Frequently — several significant disruptions per year
- Occasionally — two or three disruptions in the past year
- Rarely — once in the past year or so
- Almost never — consistently varied diet year-round
How often do you drink alcohol in amounts that may affect gut health — such as drinking several drinks in one sitting or drinking on most days of the week?
- Most days, often several drinks
- Several days a week
- Occasionally — a few times a month at most
- Rarely or not at all
How aware are you of any connection between your gut comfort and your mood or mental state on the same day — for example, noticing that digestive discomfort and lower mood tend to occur together, or that comfortable gut days track with better mental clarity?
- Not aware — never connected gut comfort with mental state
- Vaguely aware — heard this is possible but rarely notice it myself
- Somewhat aware — notice some patterns but haven't acted on them
- Clearly aware — notice reliable gut-mood patterns and factor them into my choices
How often do you notice changes in mental clarity, focus, or energy in the one to two hours after eating — and do you pay attention to which foods tend to be associated with those changes?
- Never — I don't connect food choices with how I feel afterwards
- Rarely — sometimes notice but don't track or adjust
- Sometimes — notice patterns and occasionally adjust food choices
- Consistently — pay close attention and adjust eating based on how I feel
When you're going through a stretch of lower mood or higher stress, which best describes what happens with your eating?
- I don't make food into another thing to manage during a hard patch — I just eat whatever's easiest and don't overthink it
- I think about adjusting what I eat, but I rarely follow through
- I usually make some adjustments — trying to keep some plant variety or fermented foods going
- I deliberately keep my eating on track — plant variety, fermented foods, regular meal timing — precisely because a hard patch is when it's easiest to let slip
How actively do you seek out and apply evidence-based information about the gut-brain connection — reading primary research or clear reviews, trying evidence-informed dietary changes, and staying curious about what the research is finding?
- Not engaged — don't follow this area and haven't tried related dietary changes
- Minimally engaged — heard about it but not explored it further
- Moderately engaged — follow the topic and have tried some evidence-informed changes
- Actively engaged — engage with the evidence and apply it consistently

Appendix · Method & evidence Nutri · Case file

How this instrument works

This is a 20-item structured self-assessment of your gut-brain dietary habits, read across 5 dimensions: Dietary Fibre Diversity; Fermented Food Habits; Stress-Gut Awareness; Disruption History; and Mood-Gut Noticing. Each item is a concrete scenario with four forced-choice responses — no neutral midpoint, so every answer commits to a direction — and response order is shuffled on every run to vary position; this implementation has not been tested for bias reduction. 5 of the 20 items are reverse-keyed — the attractive-sounding response is the structurally weak one — with wording intended to challenge socially desirable framing; this design has not been tested for bias reduction.

Scoring combines an overall reading with a per-dimension profile. Cascade flags compare configured dimension totals with editorial thresholds. They do not establish a compound risk and may not reflect the item-level pattern. The result bands are editorial guidance, not clinical thresholds: they organise the reading, they do not describe.

Every dimension insight cites peer-reviewed literature, and most answer reveals do — 5 sources back this instrument, each with DOI metadata supplied at build time; source relevance and claim interpretation remain editorial judgments. Compiled by the High Performance Culture editorial team. Instrument v1.1 · August 2026.

Read the full assessment methodology →

Items: 20
Dimensions: 5
Format: Forced choice, 4 options
Sources: 5
Instrument: v1.1 · August 2026

The 5 editorial answer groups

Dietary Fibre Diversity

Strength here looks like eating legumes and whole grains consistently, varying the range of plant food types weekly, and including prebiotic-rich foods regularly.

The vulnerable pattern: relying on a narrow range of plant foods, rarely eating legumes or whole grains, and rarely including prebiotic-rich foods.

Sample itemHow regularly do you eat legumes — lentils, beans, chickpeas, or peas — and whole grains such as oats, brown rice, barley, or wholegrain bread?

First structural move: Add one legume and one different plant food type to your shopping this week — a tin of chickpeas and a vegetable you don't usually buy. This is a specific, observable change; it does not measure your microbiome.

Go deeperProtocol: The Cognitive Fuel Protocol →Glossary: Prebiotics →

Fermented Food Habits

Strength here looks like eating fermented foods on most days, and keeping this habit consistent across the year.

The vulnerable pattern: rarely or never eating fermented foods, or eating them only when you happen to think of it.

Sample itemHow consistently do you eat fermented foods — plain yogurt, kefir, sauerkraut, kimchi, miso, or similar foods that contain live cultures?

First structural move: Add one fermented food today — plain yoghurt with breakfast or sauerkraut with lunch — and set a daily cue to repeat it. This is a specific habit to try, not a guaranteed effect.

Go deeperGlossary: Probiotics →Glossary: Inflammation →

Stress-Gut Awareness

Strength here looks like noticing the stress-gut connection, using a consistent stress-management practice, and eating regularly even under pressure.

The vulnerable pattern: not noticing a stress-gut connection, having no regular stress-management practice, and letting stress disrupt meal timing and food quality.

Sample itemHow aware are you of the two-way relationship between psychological stress and digestive function in your own body — for example, noticing that stress tends to affect your gut, or that your gut state influences your mood?

First structural move: For one week, note whether your stress level and digestive comfort tend to move together each day. This is an observation exercise; it does not establish a cause.

Go deeperProtocol: The Vagus Nerve Protocol →Deep dive: The Science of Cortisol →Glossary: Vagus nerve →

Disruption History

Strength here looks like minimal recent antibiotic use, a deliberate dietary recovery plan after antibiotics when needed, a consistently varied diet, and little or no heavy alcohol use.

The vulnerable pattern: multiple antibiotic courses without a dietary recovery plan, frequent significant dietary disruption, and regular heavy alcohol use.

Sample itemThinking about the past two years, how often have you taken a prescribed course of antibiotics?

First structural move: If you have taken antibiotics recently and haven't adjusted your diet, plan several weeks of increased plant variety and fermented food intake now. This is a specific, observable habit; it does not restore your microbiome to a known baseline.

Go deeperProtocol: The Metabolic Reset Protocol →Glossary: Leaky gut →

Mood-Gut Noticing

Strength here looks like noticing gut-mood patterns in daily life, paying attention to post-meal mental clarity, and adjusting diet during difficult periods.

The vulnerable pattern: not noticing gut-mood patterns, not paying attention to food-cognition links, and not adjusting diet during difficult periods.

Sample itemHow aware are you of any connection between your gut comfort and your mood or mental state on the same day — for example, noticing that digestive discomfort and lower mood tend to occur together, or that comfortable gut days track with better mental clarity?

First structural move: For one week, note your gut comfort and mood independently each evening, then review whether they tend to move together. This is an observation exercise; it does not establish a cause.

Go deeperProtocol: The Emotional Agility Protocol →Glossary: Serotonin →

Questions, answered

Is this a diagnosis?

No. This assessment is a structured self-reflection tool, not a validated clinical instrument. Its result bands are editorial guidance, not clinical thresholds — they organise your answers into a readable profile; they do not describe a condition. If you have concerns about your health or wellbeing, speak to a qualified professional.

How were the questions designed?

Each of the 20 items presents a concrete scenario with four graded responses and no neutral midpoint, so every answer commits to a lean. Items were authored against the peer-reviewed literature listed in the evidence file on this page, and citation metadata is supplied at build time; source relevance and claim interpretation remain editorial judgments. Response order is shuffled on every run to vary position; this implementation has not been tested for bias reduction.

What happens to my answers?

Assessment answers stay on this device. Unfinished progress expires after 30 days. A completed profile and optional comparison history remain until you delete local assessment data or clear browser data. If you opt into email, your email address is sent; item answers are not. If you share a result link, total and dimension scores are included in the URL and may appear in browser, server, CDN, or analytics logs.

Can I share my result?

Links created by this assessment contain no scores. Older result URLs may contain total and dimension scores and can appear in browser history and server or CDN logs; avoid sharing them.

How often should I retake it?

The instrument keeps your previous reading and sets the two side by side when you retake — the Second Reading. There is no validated retest interval; repeat only if a raw answer-point comparison would be useful, and do not treat it as confirmed underlying change.

Why bands instead of percentiles?

Because this assessment does not collect a population score set, there is no reader population to rank you against — and we will not invent one. The 5-dimension profile groups selected answer points for editorial display; it is not a validated structural or decision-utility model.

Where does the evidence come from?

Every dimension insight cites peer-reviewed research, and most answer reveals do — 5 sources stand behind this instrument, each with DOI metadata supplied at build time; source relevance and claim interpretation remain editorial judgments. A few reveals are straightforward editorial reasoning from the same evidence base and carry no citation by design. The full list, with DOIs, is in the evidence file below.

The evidence file

5 peer-reviewed sources stand behind this instrument's items and insights.

Cryan et al. (2019) — The Microbiota-Gut-Brain Axis. Physiological Reviews. DOI: 10.1152/physrev.00018.2018 ✓ Crossref‑verified
Zandifar et al. (2025) — The Effect of Prebiotics and Probiotics on Levels of Depression, Anxiety, and Cognitive Function: A Meta-Analysis of Randomized Clinical Trials. Brain and Behavior. DOI: 10.1002/brb3.70401 ✓ Crossref‑verified
Ross et al. (2024) — The interplay between diet and the gut microbiome: implications for health and disease. Nature Reviews Microbiology. DOI: 10.1038/s41579-024-01068-4 ✓ Crossref‑verified
Wastyk et al. (2021) — Gut-microbiota-targeted diets modulate human immune status. Cell. DOI: 10.1016/j.cell.2021.06.019 ✓ Crossref‑verified
McDonald et al. (2018) — American Gut: an Open Platform for Citizen Science Microbiome Research. mSystems. DOI: 10.1128/msystems.00031-18 ✓ Crossref‑verified