Some of the top superfoods include tomatoes, apples, blueberries, avocados and spinach. Some other superfoods are salmon, extra virgin olive oil, garlic and honey. While it is more of a marketing term than a scientific one, superfoods often contain high amounts of antioxidants, polyphenols, vitamins and minerals.
Tomatoes are one of the top superfoods because they contain lycopene, which is an antioxidant that appears in few other foods. Tomatoes also contain potassium, fiber and vitamin C, and they can protect the skin against harmful ultraviolet rays and help thwart certain types of cancers. Avocados are a superfood because they contain healthy monosaturated fats. They also contain oleic acid which helps the body stay full longer.
Blueberries are a superfood because they contain high amounts of antioxidant phytonutrients, vitamin E, fiber and folate. They can also help fight cancer, improve brain function, and help with balance and coordination. Garlic contains arginine, ascorbic acid, polyphenols and potassium. It helps with lowering blood pressure, easing cold and flu symptoms, reducing the amount of heavy metals in the body and may even help prevent Alzheimer's disease.
Salmon and other fatty fish contain omega-3 fatty acids. Consuming these fish on a regular basis can help reduce the risk of heart disease and stroke. Other fish that contain omega-3 fatty acids are shark and swordfish, but it is not advisable to eat them because of their high mercury levels.