Living with Post-Traumatic Stress Disorder (PTSD) can affect many aspects of daily life, including sleep, energy, mood, digestion and appetite. While nutrition is not a treatment for PTSD on its own, the foods we eat can support brain health, stabilise energy levels and help the body manage stress more effectively.

PTSD is associated with changes in stress hormones, inflammation, and neurotransmitters in the brain. Nourishing the body with the right nutrients can help support the nervous system, regulate blood sugar and improve overall wellbeing.

Here are some nutrition strategies that may help support people living with PTSD.

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1. Eat Regular Meals to Stabilise Blood Sugar

Blood sugar fluctuations can worsen symptoms such as irritability, fatigue, poor concentration and anxiety. Skipping meals or going long periods without eating may increase stress hormone levels.

Aim to eat three balanced meals and 1–2 snacks each day to maintain steady energy.

A balanced meal should include:

• A source of protein (eggs, fish, chicken, tofu, legumes)

• Wholegrain or complex carbohydrates (oats, brown rice, wholegrain bread)

• Healthy fats (avocado, nuts, seeds, olive oil)

• Vegetables or fruit

Regular meals help keep the brain fuelled and support emotional regulation.

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2. Include Omega-3 Fats for Brain Health

Omega-3 fatty acids support brain function and may help reduce inflammation in the body. Research suggests omega-3 fats may also play a role in supporting mood and stress regulation.

Good sources include:

• Salmon

• Sardines

• Tuna

• Chia seeds

• Flaxseeds

• Walnuts

Aim to include oily fish 2–3 times per week, or plant-based omega-3 sources regularly.

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3. Prioritise Magnesium-Rich Foods

Magnesium helps regulate the nervous system and supports relaxation and sleep. Low magnesium levels are often associated with increased stress and anxiety symptoms.

Magnesium-rich foods include:

• Leafy greens such as spinach

• Pumpkin seeds

• Almonds and cashews

• Whole grains

• Dark chocolate

• Avocado

Including a small handful of nuts or seeds in snacks can be an easy way to boost intake.

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4. Support Gut Health

The gut and brain communicate through the gut–brain axis, and gut health can influence mood, stress and inflammation.

Supporting a healthy gut microbiome may help improve overall mental wellbeing.

Gut-friendly foods include:

• Yoghurt with live cultures

• Kefir

• Sauerkraut

• Kimchi

• Miso

• Fibre-rich foods like vegetables, legumes and whole grains

Eating a variety of plant foods helps nourish beneficial gut bacteria.

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5. Focus on Foods That Support Sleep

Sleep difficulties are common for people living with PTSD. Certain nutrients can help support relaxation and sleep quality.

Helpful foods include:

• Oats

• Bananas

• Almonds

• Kiwi fruit

• Dairy foods

• Turkey and chicken

These foods contain nutrients that help support the production of serotonin and melatonin, which regulate sleep.

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Recipe Ideas to Support Stress and Nervous System Health

1. Calming Banana Oat Smoothie

This smoothie contains complex carbohydrates, magnesium and healthy fats to support steady energy and relaxation.

Ingredients

• 1 banana

• ½ cup rolled oats

• 1 cup milk or calcium-fortified plant milk

• 1 tablespoon almond butter

• 1 teaspoon chia seeds

• Cinnamon to taste

• Ice (optional)

Method

1. Blend all ingredients until smooth.

2. Pour into a glass and enjoy as a nourishing breakfast or snack.

Why it helps:
Oats support serotonin production, while almond butter and chia seeds provide magnesium and healthy fats that support the nervous system.

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2. Nourishing Salmon & Sweet Potato Bowl

This meal provides omega-3 fats, complex carbohydrates and fibre to support brain health and stable energy levels.

Ingredients

• 120g salmon fillet

• 1 small sweet potato, roasted

• ½ cup cooked quinoa

• 1 cup spinach or leafy greens

• ¼ avocado

• 1 tablespoon pumpkin seeds

• Extra virgin olive oil and lemon juice

Method

1. Roast sweet potato until soft.

2. Cook salmon in a pan or oven until flaky.

3. Place quinoa and spinach in a bowl.

4. Top with salmon, sweet potato, avocado and pumpkin seeds.

5. Drizzle with olive oil and lemon juice.

Why it helps:
Salmon provides omega-3 fats, pumpkin seeds supply magnesium, and sweet potato offers slow-release carbohydrates for stable energy.

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Additional Nutrition Tips

Small daily habits can also support overall wellbeing:

• Stay well hydrated throughout the day

• Limit excessive caffeine if it worsens anxiety or sleep

• Include protein at each meal

• Choose mostly whole, minimally processed foods

• Be compassionate with yourself if appetite varies during stressful periods

Nutrition should support recovery, not add additional stress.

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Supporting Your Health with the Right Nutrition

Everyone’s experience with PTSD is different, and nutrition needs can vary. Personalised nutrition support can help you develop practical strategies that work for your lifestyle, energy levels and recovery goals.

At Feed Your Future Dietetics, we work with individuals and families to create realistic and supportive nutrition plans that improve wellbeing and long-term health.

If you would like personalised guidance, contact Feed Your Future Dietetics today to book an appointment and start feeding your future