42 Calm-Boosting Foods: Eat Your Way to Less Stress

23. Watercress: The Overlooked Supergreen for Mental Clarity

Watercress may not get as much attention as kale or spinach, but this peppery, nutrient-dense green is packed with stress-busting properties. Rich in vitamin C, magnesium, and iron, watercress helps reduce oxidative stress in the brain, which can contribute to anxiety and mental fatigue. It’s also a fantastic source of phenethyl isothiocyanate (PEITC), a powerful compound that has been linked to improved brain function and neuroprotection. The natural nitrates in watercress enhance blood flow, ensuring that your brain gets the oxygen and nutrients it needs to stay sharp and focused—even under stress. Add watercress to salads, blend it into soups, or throw it into smoothies for a nutrient-packed punch.