There exists a more powerful connection between nutrition and mental health than most realize. Therapy, medication, and physical activity changes are all necessary in managing anxiety, depression, and mental health issues, but what’s emerging is the research indicating that the food we consume also plays a key role in our emotional well-being.

There is little doubt that what you eat may impact your physical and emotional health. Foods rich in variety, whole, and minimally processed foods are most likely to stabilize mood, sustain energy, and potentially minimize the severity of mental health symptoms. Highly processed foods, refined sugars, saturated fats, and added ingredients may bring some short-term elevation but are positively correlated with higher levels of depression and anxiety.

This blog will explore the impact of nutrition on mood with a focus on some specific nutrients, and ultimately highlight some of the better choices of food to promote natural interventions for the management of anxiety and depression.

The Gut-Brain Connection

Your gut and brain are in constant dialogue via the gut-brain axis. This intricate network of nerves, hormones, and biochemical signaling exists between the gastrointestinal tract and our brain and central nervous system. The vagus nerve, which acts as a communication superhighway between our mental health and gut, is an important part of this system. 

The gut is even nicknamed “the second brain,” and for good reason: it consists of hundreds of millions of neurons, and it creates roughly 90% of the body’s serotonin, which is a neurotransmitter that regulates mood, and sleep, and can generate feelings of happiness. 

When the gut is healthy, it contributes to brain/mental health by reducing anxious and depressive symptoms. When the gut may not be in good health, whether due to poor diet, stress, antibiotics, or inflammation, it can alter the gut-brain axis in such a way as to contribute to mood problems.

Top Foods to Fight Anxiety and Better Mental Health

1. Fatty Fish (Salmon, Sardines, Mackerel)

Fatty fish are one of the best sources of omega-3 fatty acids, which are very important for your brain. Omega-3 provides EPA and DHA that can reduce neuroinflammation and help the cellular membranes of your brain perform optimally. Research has found that individuals with low omega-3 status could be more prone to suffering from depression and anxiety. Fatty fish may also help with the production and function of neurotransmitters like serotonin and dopamine, which are essential for regulating your mood.

Eating fatty fish on a regular basis can minimize mental health issues, mood fluctuations, enhance cognition, and potentially preserve mental function in old age. Nutritionists recommend that you eat 2–3 servings of fatty fish weekly. If you are a vegetarian or vegan, you can absolutely acquire omega-3s from plant-based sources like flaxseeds, chia seeds, and algae oil, but note that they have a different form (ALA) that your body will need to convert.

2. Leafy Greens (Spinach, Kale, Swiss Chard)

Leafy greens provide a stunning array of nutrients, including large amounts of folate, magnesium, and vitamin B6, many of which are crucial for mental well-being. Folate (B9) is necessary for the production of the key transmitters serotonin and dopamine. Magnesium is important for regulating the body’s stress response (releasing and/or reducing the release of cortisol – the primary stress hormone) by supporting adrenal function. Studies have often pointed to a deficiency in these nutrients with increased levels of anxiety, irritability, and low mood.

Leafy greens also can provide a wealth of antioxidants to protect the brain against oxidative stress, which may affect mood and is often a factor in many stress-related mental disorders. This is one reason to include a variety of leafy greens in the diet to decrease inflammation and aid the brain’s detoxification processes. Consider adding a handful of spinach to your smoothies, sautéing kale as a side dish, or adding Swiss chard to soups and stews. More color and variety are often better for mental (and physical) health.

3. Probiotic-Rich Foods (Yogurt, Kimchi, Sauerkraut)

Although your gut and brain do communicate via something scientists refer to as the gut-brain axis, your digestive health may be more responsible for your mood and focus than you think. The more probiotics you eat (foods that contain them), such as yogurt, kimchi, sauerkraut, kefir, and miso, the more beneficial bacteria you will have to help produce neurotransmitters (serotonin), control inflammation, and keep the gut lining intact for emotional stability. In addition, approximately 90–95% of serotonin receptors are in the gut, which means your gut health is crucial to your mental state.

 Eating fermented foods many times a week, rather than relying on probiotics, has been shown to have fewer anxiety and depression symptoms, a much healthier response to stressful situations, and, in no biased order, healthier sleep. For optimal effects, you should only purchase fermented foods that have “live and active cultures,” and avoid fermented foods with added sugars or preservatives that kill the probiotics’ effects.

4. Berries (Blueberries, Strawberries, Raspberries)

Berries are high in antioxidants, particularly in anthocyanins! Anthocyanins likely help prevent injurious oxidative stress and decrease the risk of brain inflammation, which can be a driver in mood disorders. Those with chronic inflammation have been shown to have an increased likelihood of experiencing mood disorders. It is possible that antioxidant-rich foods, such as berries, may have a protective effect. Berries also have vitamin C (vitamin C serves other important biological functions and promotes adrenal health, and helps to decrease the stress hormone cortisol and catecholamines).

Berries promote better memory, proteins, cognition, and overall mood and happiness. There is research indicating that those with symptoms of depression or mental health issues who eat berries 1x weekly or more, even daily, report lower depressive symptoms. You can eat berries whole, add them to a smoothie, or toss them in Greek yogurt and have a super healthy snack, still very healthy for your brain: berries!

5. Whole Grains (Oats, Quinoa, Brown Rice)

Whole grains are considered complex, as per better health, complex carbohydrates “digest very slowly,” allowing for stable blood sugar; keeping blood sugar stable is essential to preventing the mood and energy swings exacerbating symptoms of depression and anxiety via blood glucose instability. Whole grains also assist in creating serotonin, a neurotransmitter associated with calm, happiness, and focused.

Whole grains, such as quinoa, oats, or brown rice, provide fiber, B vitamins, and minerals (i.e., selenium, magnesium) that may help brain health. When you eat whole grain foods instead of refined carbohydrates, you are giving nutrients that contribute to emotional balance throughout your body. Try to include whole grains in breakfast bowls, grain salads, or hearty side dishes. 

6. Dark Chocolates (in moderation)

Dark chocolate, if you enjoy a small treat, in moderation, has the potential to improve your mood. Dark chocolate contains flavonoids, magnesium, and phenylethylamine, which promote stress reduction and support areas of brain function to release endorphins to relieve stress and produce a sense of release and serotonin to make you feel good. Eating dark chocolate may enhance blood flow through the brain, helping your cognitive abilities and perhaps reducing mental fatigue.

Not all chocolate is created equally. When eating dark chocolate for its many health benefits without the additional sugar, choose dark chocolate that has a cocoa content of at least 70 percent. Only eat 1-2 small squares per day, so it’s also part of a balanced diet. Eating too much dark chocolate can lead to an excess intake of sugar, which may have the opposite effect on your mood and energy.

7. Nuts and Seeds (Walnuts, Chia Seeds, Pumpkin Seeds)

Nuts and seeds are a great healthy source of fats because they are also rich in omega-3 fatty acids, magnesium, zinc, and tryptophan (which is converted to serotonin in our body). Some nuts, such as walnuts, are one of the best sources of plant-based omega-3, and pumpkin seeds contain bioavailable zinc, a necessary component for neurotransmitter function regularity which may affect how you feel overall. 

Nuts and seeds can also add protein and fiber to your diet, which helps maintain blood sugar levels and lessen daily feelings of anxiousness and sadness. A handful of nuts, or a tablespoon of chia seeds (which you can put in your baked oatmeal/smoothie/salad/etc), will help provide clarity of thoughts, focus, and emotional balance in your day-to-day life. 

Don’t Forget Vitamin D

Low levels of vitamin D have been linked to an increased risk of being depressed and having seasonal affective disorder. You can maintain healthy vitamin D levels through sunlight/supplementation / fortified foods / etc.

Stay Hydrated

Even slight dehydration can affect your mood and concentration. Drinking enough water supports brain function, so it can keep you from getting fatigued, anxious, or irritated.

Create a Mood-Boosting Diet

A mental health diet is all about balance, variety, and consistency. Here is a no-nonsense guide:

• Whole, unprocessed foods
• Moderation of sugar, caffeine, and alcohol
• Nutrition is essential to stabilize blood sugar by eating meals regularly.
• Eat plenty of anti-inflammatory and gut-friendly foods. 

Conclusion

To get the best from your brain, it requires the right fuel. Diet alone will not cure anxiety or depression; however, it can be an essential part of supporting your journey. Take the time to make exposure to whole, nutrient-dense, mood-boosting foods part of your mental health strategy, and let it strengthen you from the inside and out.

If you are struggling with anxiety or depression, you should talk with your doctor; however, having strategies to heal with what is on your plate is essential.

Are you ready to feel better, one bite at a time? Start at your next meal.