The Vagus Nerve
A major pathway linking the gut and brain. Most vagal fibers are afferent, carrying sensory information toward the brain; the meaning of those signals depends on context.
EFFECTIVE · EMPOWERING · IMPACTFUL
Simple moves lead to
real impact.
StaySwel turns trusted wellness research into clear next steps—starting with the gut and connecting the rest without the hype.
Knowledge is the Most Powerful Supplement.
Educational research summaries only—not diagnosis, treatment, or personalized medical advice. Seek professional care for persistent, severe, or concerning symptoms.
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Flagship evidence hub
DAILY STAYSWEL CONTEXTChewing10/15
Chewing is part of normal digestion. Claims that a specific number of chews improves absorption are not universally established.
WLN-01Whole-Person Wellness
Gut health leads.
Everything connects.
StaySwel starts with our deepest area of coverage—the gut—then connects it carefully to the other foundations of functional wellness.
SELECTED PILLAR
Nutrition
Food patterns, nutrient adequacy, and practical context.
HABIT-01Simple Moves Lead to Real Impact
Start small.
Build from there.
Useful change does not need to feel dramatic. Pick one move that fits your day and make it easy to repeat.
General guidance is a starting point—not a promise or a substitute for personal care.
Explore all wellness habitsKeep water nearby
Water supports normal body function. How much you need changes with activity, climate, health, and diet.
Source: CDC →Add one plant food
A small step toward variety can be practical. Choose foods that fit your access, culture, needs, and tolerance.
Source: Dietary Guidelines →Add a little movement
Any activity is better than none. Build toward general guidance in a way that fits your ability and health.
Source: WHO →Repeat tomorrow
Consistency can make habits easier to maintain, though health effects vary by person and context.
SYS-01The Gut-Brain Axis
Your gut and brain are biologically connected.
The gut–brain axis describes bidirectional communication through neural, endocrine, immune, and metabolic pathways. Gut microbes can contribute metabolites that interact with some of these systems.
These pathways help coordinate digestion and stress responses. Research also explores links with mood and cognition, but individual symptoms can have many causes.
AXIS-02
The Microbiome
Trillions of microorganisms in your gut produce metabolites and influence neurotransmitter signaling. More than 90% of the body’s serotonin is produced by intestinal enterochromaffin cells, and it does not cross the blood–brain barrier.
AXIS-03
Mood & Digestion
Anxiety can contribute to gut discomfort, while digestive symptoms can affect wellbeing. The relationship is bidirectional and varies from person to person.
SYS-02Gut Nutrition
Nutrition shapes context.
Evidence shapes choices.
Diet can shape the gut microbiota, which interacts with immune, metabolic, and neural pathways. The effects of supplements are product-, dose-, and person-specific.
Probiotics
Live microorganisms studied for strain- and condition-specific effects.
Prebiotics
Fermentable compounds studied for their interactions with gut microbes.
Digestive Enzymes
Proteins with specific digestive roles; supplemental uses depend on the enzyme and indication.
Omega-3s
Fats studied across several health contexts, with effects varying by formulation and population.
What is being studied across gut–brain research?
These research areas involve complex associations and do not predict an individual health outcome or imply that one system can be “optimized.”
Mood Research
Gut–brain associations are under study; the microbiome does not diagnose or determine mood.
Immune Research
Gut tissues contain extensive immune activity, without a single measure of “stronger immunity.”
Digestive Research
Digestive symptoms have many causes; microbiome diversity is not a diagnosis or outcome guarantee.
Energy Research
Fatigue and energy are influenced by many factors and cannot be inferred from gut function alone.
Inflammation Research
Microbiome features and inflammatory markers can be associated without proving cause or treatment effect.
Cognition Research
Gut–brain research does not establish a microbiome treatment for brain fog, focus, or anxiety.
PATH-01Choose Your Path
Which research area interests you?
Select a topic to review general evidence, limitations, and related educational resources—not personalized recommendations.
VIS-01Live Visualization
The Vagus Nerve Highway
This animation illustrates that most vagal fibers are afferent, carrying sensory information toward the brain. It is not real-time physiology and does not show that the gut controls most brain activity.Review the source →
Brain (CNS)
Processes gut signals, regulates mood
≈80% afferent fibers≈20% efferent fibers
Enteric Nervous System
Large local neural network; estimates vary
Vagus Nerve Pathway
Conceptual animation only; dots do not represent measured neural signals
INSIGHT-01Deep Dive Insights
Science at Your Pace
Each insight has three depth levels. Start simple, or dive deep into the research — choose what works for you.
SYS-03Daily Wellness
Everyday habits.
Evidence in context.
Diet, sleep, movement, and stress are associated with general wellbeing, while effects vary and should not be treated as guaranteed gut or mood outcomes.
Plant variety
Observational research associates greater plant variety with some microbiome measures; 30 plants is a challenge, not a clinical requirement.
Swipe or tap arrows to explore tips
RESOLVE-01Symptom Education
How do you feel right now?
Select a symptom to review general educational possibilities and low-risk wellbeing practices. Symptoms can have many causes; this tool does not diagnose or treat them.
REF-01Wellness Context Explorer
Reflect, don’t self-diagnose.
Adjust three everyday inputs to see general guidance. No biomarkers, health scores, or outcomes are calculated.
Sleep
Your selected sleep duration meets general adult guidance.
CDC: most adults need at least 7 hours →Stress
Stress responses vary; a number cannot measure your physiology.
Stress and digestion can interact; symptoms still need context →Food variety
This food count is a reflection tool, not a microbiome score.
Variety can support dietary quality; 30 plants is not a clinical target →Educational reflection only. Persistent or concerning symptoms deserve professional assessment.
DIV-01Plant Diversity Tracker
Track weekly
plant variety.
In the observational American Gut Project, people reporting more than 30 plant types per week had greater microbial diversity than those reporting fewer than 10. This is an association, not a required clinical target.Review the American Gut study →
0VARIETY COUNT
0–9 plants selected
This count describes selected foods only; it does not measure microbiome diversity or health.
REFLECTION · DAILY FOUNDATIONS
Review your current
wellness routines.
Five general questions about digestion, mood, diet, sleep, and stress. This check-in is educational and is not a diagnostic or validated clinical assessment.
Ready for a non-clinical habit reflection?
Answer five general questions to receive a non-clinical summary of habits you may want to explore.
CONTINUE EXPLORING
Understand the foundations.
Stay well, with context.
Explore the evidence, understand its limits, and see how gut health connects with the wider foundations of wellbeing.