Blue Food: What Are They?
The word “blue” comes from the Latin word “blu”, which means white or clear. Blue food refers to all types of plants and animals that have a bluish-white colouration. These include the following:
• Fruit – such as apples, pears, plums, apricots, cherries etc.
• Leaves – such as spinach, kale, mustard greens, chard etc.
• Flowers – such as dandelions, daisies etc.
Blue Foods: Their Properties and Uses
There are many different types of blue foods. Some of them have powerful health benefits while others may cause allergic reactions in some individuals. There are also other blue foods that do not contain any nutritional value at all but still have a strong effect on your body’s metabolism.
Blue foods are divided into two categories: those that are rich in vitamins and minerals and those that are low in these elements. Here is a list of the most important blue foods:
Vitamins & Minerals
Amino Acids (vitamin A) – All blue fruits contain high amounts of vitamin A. Vitamin A plays an essential role in human nutrition. It helps our eyesight, skin tone, immunity, reproduction and vision.
Lack of this vitamin can lead to blindness and other vision-related disorders.
Antioxidants – Blue foods, especially the pigments in berries, contain high amounts of antioxidants. These protect the body’s cells from damage and support the immune system.
Calcium – This element is essential for strong bones and teeth. It also helps with muscle contraction and blood clotting. Some types of blue fruits contain large amounts of calcium, such as figs and oranges.
Iron – This element is important for the function of the blood. It helps oxygen to circulate around the human body and therefore supports physical endurance. The main source of iron in blue food is broccoli and raisins.
Magnesium – A lack of magnesium can lead to muscle cramps and spasms, as well as coronary problems. Magnesium is also important for the function of the nervous system. The main magnesium-rich blue food is figs.
Phosphorus – This element is part of ATP, the main energy currency for the human body. It also supports healthy bones and teeth. The best sources of phosphorus in blue food are raisins and figs.
Potassium – This element helps to control the heartbeat and blood pressure. It also keeps the nervous system working properly. Some types of blue foods contain large amounts of potassium, such as figs and olives.
Sodium – Sodium is an important element for maintaining the water balance in the human body. It is also essential for transmitting nerve impulses and sending active to the muscles. Foods that contain high amounts of sodium are olives, capers and raisins.
Vitamin C – This vitamin is essential for healthy immune and gums. It also protects the body from damaging free radicals. Blue berries and citrus fruits are especially high in this vitamin.
Foods that contain large amounts of vitamins and minerals are raisins, figs, olives, blueberries, oranges, plums, pears and apricots.
Most blue foods contain low amounts of calories.