Can The Mediterranean Diet Really Improve Your Mood?

mood, Mediterranean diet
Robyn Foyster Robyn Foyster has been verified by Muck Rack's editorial team


Jun 02, 2020

Have you ever noticed that your mood affects your choice in food? Guilty as charged here. But how can food, in turn, affect mood? Christine Stewart, nutritionist, registered nurse, and Microba microbiome coach, takes a look.

Let’s look at the increasingly popular Mediterranean diet – traditional to those around the Mediterranean Sea and praised for its proposed health benefits. Recent research has revealed that people with the highest adherence to the Mediterranean diet over a period of time have lower odds for developing depression compared to those with lower adherence. Therefore, this begs the question, what exactly is the Mediterranean diet?

The Mediterranean diet

mood, Mediterranean diet

This exotic sounding diet is rich in fruit, vegetables, nuts, seeds, legumes, grains, fish, and olive oil as well as red wine consumed in moderation. But why is this diet seen as beneficial? These foods are generally abundant in beneficial fats, polyphenols and fibre, with more protein coming from vegetables rather than animals.

There is a long list of whole foods typically consumed in the Mediterranean diet, indicating that there is no single ‘superfood’ that can improve how we’re feeling. The great news is that there is a range of foods that may be beneficial for us!

This is because food is complex and comprised of many different nutrients within a single food. The same message is clear in terms of our gut microbiome – the community of bacteria living in our gut. There is no single “superfood” that feeds all the beneficial bacteria, or us for that matter.

But how can food influence your mood?

Our large intestine is home to masses of bacteria and other microorganisms and is commonly termed the gut microbiome. Within this community of bacteria live species that can break down fibre and generate short chain fatty acids (SCFAs). These helpful substances can play various roles in our health and wellbeing and possibly how we are feeling every day.

mood, diet, food

We’ve all heard of serotonin, but serotonin is a chemical that can have many functions in the body as well as being thought of as a natural mood stabiliser. It helps us to feel happier, calmer and less stressed and anxious. The positive is that some of the  SCFAs produced within the gut microbiome can stimulate our gut cells to produce serotonin. Almost 90% of serotonin is produced in our gut, therefore, if we consume adequate amounts of fibre in our diet, we can theoretically optimise the production of SCFAs and ultimately our serotonin levels. 

How to eat for your mood AND your gut

Consuming a high-fibre plant-based diet with as much variety as possible contributes a diverse range of prebiotics to help nourish our friendly gut bacteria. When the beneficial bacteria in our gut are thriving, they tend to help us thrive too.

Top five prebiotic-rich foods that won’t break the bank

  • Rye – why not try some rye bread or crackers with your lunch?
  • Cooked and cooled potatoes – think potato salad!
  • Fruit – eat seasonally for more affordable and diverse options!
  • Oats – why not mix up your breakfast choices with some rolled oats?
  • Nuts – try a selection of nuts as a snack or in a summer salad!

High-fibre Mediterranean meal ideas


  • Toasted multigrain bread with avocado, hummus, sliced tomato and olives with a boiled egg and some fetta on top. 


  • Spiced lentil and chickpea patties with Greek salad. 


Baked salmon with roasted baby potatoes, eggplant, capsicum, zucchini and steamed broccoli. 

*These items may vary and this meal plan is dependent on food intolerances, recipes and serve size.

Although studies show that diet may play an important role in our mental health, it shouldn’t replace treatments prescribed by qualified and experienced mental health care professionals. It should also be noted, that adherence to a plant rich diet over a long period of time seems to have the strongest level of evidence in terms of its effectiveness.

If you are considering adopting the Mediterranean diet, before implementing any changes, consult with a dedicated health care practitioner.

The Carousel would like to thank Christine Stewart, nutritionist, registered nurse, and Microba microbiome coach.


By Robyn Foyster Robyn Foyster has been verified by Muck Rack's editorial team


Robyn Foyster is the owner and publisher of the lifestyle websites, and She is the only person to edit and publish Australia's three biggest flagship magazines - The Australian Women's Weekly, Woman's Day and New Idea. Robyn was Group Publisher of Bauer Media's most successful and prestigious magazines including Woman's Day, Good Health, Grazia and ran Hearst in Australia including Harper’s BAZAAR, Cosmopolitan and madison. Voted one of B&T's 30 Most Powerful Women In Media at the Women in Media Awards Robyn was a keynote speaker at Pause 2021, Cebit & J&J Women In Leadership. Robyn was also the winner of the prestigious Magazine Publisher Association’s Editor of the Year award.


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