“Blueberries are high in a pigment called anthocyanins. It’s an antioxidant that really helps to calm your nerves. It helps to stabilize your blood-sugar levels and it gives you a more stable energy throughout the day.”
Dark green leafy vegetables are high in dietary fiber and help stabilize your energy levels, which can help calm your nerves. Kale, spinach, collard greens, green leaf and romaine lettuce, broccoli and turnip greens are all good choices.
When we stress, our sweet tooth may get the best of us. Instead of grabbing a cookie or a cake, try some sweet potatoes. Not only will they calm your cravings, the vitamin A they provide will help to calm you.
Some fish at dinner can settle you down after a stressful day. “One of the things that we know is fish like salmon really help to stabilize serotonin levels,” says Jamieson-Petonic, RD. “When you have enough serotonin in your body it tends to help manage stress.”
When your stress level goes up your vitamin C level comes down. To help raise a low C-level, eat fruits like oranges, grapefruit, kiwi, cantaloupe and pineapple, and vegetables like broccoli, spinach, Brussels sprouts, tomatoes and squash.
Source "Cleveland Clinic"