Nutrition, Nervous System Modulation & Metabolic Tips to Help Manage Stress

Here's a range of practical tips you can apply right away to help your microbiome, metabolism and nervous system respond better to stress.

IN SHORT
Practical, evidence-linked changes, prebiotic fibre, vagal toning techniques, morning sunlight and blood sugar management, can support your microbiome, metabolism and nervous system's response to stress.

Nutrition and gut health

These tips support the beneficial bacteria that produce calming, metabolically protective compounds like SCFAs.

Eat fibre-rich prebiotics daily

Prebiotic fibre fuels beneficial gut bacteria. Focus on non-digestible fibres that support short-chain fatty acid (SCFA) production, which is linked to improved insulin sensitivity and a stronger gut barrier.

Action:

Incorporate high-prebiotic foods like onions, garlic, leeks, unripe bananas (resistant starch), and cold potatoes into your meals daily.

Prioritise butyrate-supporting foods

Butyrate is a key SCFA linked to reduced inflammation and supported metabolic health.

Action:

Add fermentable fibre sources like oats, beans, legumes and whole grains (if tolerated). Ghee (clarified butter) also contains some butyrate.

Diversify your fermented foods

Greater gut microbiome diversity is linked to a better stress response and metabolic flexibility.

Action:

Include a small serving of a fermented food daily: sauerkraut, kimchi, kefir (dairy or non-dairy), or plain yoghurt with live active cultures.

Try time-restricted eating

An overnight fasting window is linked to improved gut barrier function and better metabolic signalling, including insulin sensitivity.

Action:

Aim for a 12–14 hour overnight fast, for example finishing dinner by 7pm and breaking your fast after 7am.

Stress, sleep and nervous system regulation

These tips target the HPA axis and the vagus nerve to support your body's stress response.

Practise vagal toning

The vagus nerve is the main communication line between gut and brain. Stimulating it is linked to a calmer "fight or flight" (sympathetic) response.

Action:

Try vigorous gargling with water, brief cold water exposure (splashing your face or finishing a shower with 30 seconds of cold water), or slow, deep belly breathing using a technique like 4-7-8 breathing.

Set a digital sundown

Blue light and stimulating content (news, social media) late at night is linked to raised cortisol and suppressed melatonin, contributing to low-grade chronic stress.

Action:

Stop using screens (phone, tablet, bright TV) at least 60 minutes before bed. Read a physical book or listen to calming music instead.

Move to help regulate cortisol

Mild to moderate physical activity is linked to better cortisol regulation and improved insulin sensitivity.

Action:

Take a 10-minute walk after your largest meal to support blood glucose and digestion. Mindful movement like yoga or tai chi can also help calm the nervous system.

Metabolic and lifestyle habits

These tips focus on stabilising blood sugar and reducing systemic inflammation, both relevant to maintaining a calmer state.

Manage blood sugar spikes

Large glucose fluctuations create metabolic stress and can activate inflammatory pathways.

Action:

Pair carbohydrates with protein, healthy fats or fibre rather than eating them alone, for example an apple with nut butter rather than the apple by itself.

Prioritise morning sunlight

Morning light exposure helps regulate circadian rhythms, which influence both HPA axis function (cortisol release) and metabolic hormone release.

Action:

Aim for 10–15 minutes of natural sunlight within an hour of waking, which helps signal your brain to wind down nighttime melatonin and support healthy daytime cortisol patterns.

Stay hydrated

Water is essential for metabolic processes and for producing the digestive secretions that help protect the gut lining.

Action:

General hydration guidance varies by individual, activity level and climate; a commonly used starting point is roughly half your body weight in ounces of water per day, adjusted to your own needs. Adding a pinch of sea salt or an electrolyte blend can help during periods of higher stress or activity.

See which of these levers matter most for you
General tips are a good starting point, but everyone's gut and metabolic response to stress is different. A vivaINSIGHT test combines vivaBIOME and vivaMETABOLITE to show your own markers, so you can focus on what your biology actually needs.

vivaLAB's services are designed to support health optimisation and are not a substitute for medical advice. Consult a qualified health practitioner for individual health decisions.