Quinoa contains significant concentrated amounts of certain flavonoids. Those have antidepressant-like effects! The fibre in them will also help you make more serotonin!
Avocado actually has an impact on brain chemistry. This is because of the amounts of tryptophan avocado contains. Your brain uses tryptophan to produce serotonin and serotonin makes us happy!
If you want to increase your serotonin levels without sugar, simply go for organic cocoa nibs! Cacao will increase your serotonin levels in your brain and your gut.
Berries win when it comes to preventing diseases and maintaining your health. They also contain folate, which helps you produce serotonin. And that makes you happy!
Not only does green tea contain powerful antioxidants. It also contains theanine, which increases your serotonin and dopamine levels. Winwin in the happiness camp!