Salmon: Three ounces of this brain-friendly fish has half your daily vitamin D and fills 99 percent of your B12 requirements.
Lentils: With double the fibre of an apple and almost 30 percent more folate than spinach, these low-fat legumes promote weight loss and build healthy bones.
Quinoa: This low-carb grain is a complete vegetarian protein. A 1/4 cup provides half the recommended daily dose of iron.
Red bell peppers: They have more than double the immunity-boosting vitamin C of an orange and are a rich source of heart-healthy beta-carotene.