9. Acerola cherry powder
Acerola cherries are one of the most concentrated sources of vitamin C. They boast 50–100% more vitamin C than citrus fruits like oranges and lemons (28Trusted Source
Vitamin C is involved in stress response. What’s more, high vitamin C levels are linked to elevated mood and lower levels of depression and anger. Plus, eating foods rich in this vitamin may improve overall mood (29Trusted Source, 30Trusted Source, 31Trusted Source).
Although they can be enjoyed fresh, acerola cherries are highly perishable. As such, they’re most often sold as a powder, which you can add to foods and beverages.