Foods proven to reduce cortisol
Dark chocolate

It is important to be aware, however, that dark chocolate also contains caffeine, which can increase cortisol levels. It should therefore be enjoyed in moderation.
Avocados

Avocados contain magnesium, which, as previously explained, helps keep cortisol levels under control.
Fermented foods

Most people know that fermented foods, such as yogurt and kefir, are important for maintaining a healthy gut. Fewer people know, however, that this impacts serotonin levels.

Around 90% of the neurotransmitter serotonin, which plays an important role in the body's stress response, is produced in the gastrointestinal (GI) tract.

By eating enough fermented foods and maintaining a healthy gut, we can therefore encourage proper serotonin production.
Bananas

Secondly, bananas are high in tryptophan, an essential amino acid that is converted into serotonin in the brain.
Leafy greens

Next up we have leafy greens, such as spinach and kale. These are not everyone's favorite, but they are incredibly beneficial.

Spinach in particular is also high in magnesium, which helps calm the nervous system and protect the body against stress.
Green tea

It also contains the amino acid L-theanine, which has been associated with a reduction in cognitive stress, depression, and anxiety.
Fatty fish

Fatty fish, such as salmon and sardines, are high in omega-3 fatty acids, which have a number of proven health benefits.

In order to further support your body's stress response, try pairing the fatty fish with nuts and seeds, such as almonds or chia and flax seeds.
Lean proteins

Chicken and turkey are great sources of lean protein. If you are vegetarian, a good option is tofu and/or beans.
Eggs

Last but not least we have eggs, a reliable source of protein that is important to overall health.

Moreover, eggs also provide essential amino acids that promote the production of neurotransmitters and therefore foster an overall sense of well-being.
Exercise

It is also important, unsurprisingly, that you get enough exercise in. If the body doesn't move regularly, all of its processes become more difficult.