(HealthDayNews) -- If you often feel tired and unable to concentrate, it may be due to your diet.
If you're always gobbling down foods such as muffins, pizza, french fries and donuts, you may not be getting the vitamins and minerals needed to fuel your brain, says the University of Toronto Health Services.
Foods that help keep you alert include fruits and vegetables, fish, and grains such as breads, cereal, pasta, rice and barley.
Choose fruits and vegetables high in vitamin C (citrus, kiwi, broccoli), chromium (apples, bananas, potatoes), and potassium (bananas, seeds, nuts, beans). Vitamin C helps fight fatigue associated with anxiety and stress. Chromium helps maintain steady blood-sugar levels and helps the body produce energy. Potassium helps regulate the nervous system, which may boost mental energy.
Fish is a good source of protein and contains omega-3-fatty-acids, which are believed to enhance communication between brain cells, in turn improving concentration and memory.
Grains are packed with carbohydrates, a source of energy for the body and brain.