Dante Carrillo
Minerals are essential nutrients that our bodies need in small amounts to function properly. They are inorganic substances that come from rocks, soil, and water and are absorbed by plants or animals as they eat those plants. A healthy, balanced diet with a variety of foods should provide all the minerals you need. However, individual health conditions may require specific dietary targets for certain minerals. Some of the most important minerals include calcium, iron, magnesium, zinc, and potassium. These minerals play vital roles in various bodily functions, such as the formation of bones and teeth, nervous system regulation, immune function, and energy production.
| Characteristics | Values |
|---|---|
| Number of groups minerals are classified into | 2 |
| Names of the groups | Major minerals, Trace minerals |
| Amount of major minerals needed | 100mg or more each day |
| Major minerals | Calcium, Phosphorus, Magnesium, Sulfur, Potassium, Sodium, Chloride |
| Amount of trace minerals needed | Less than 100mg each day |
| Trace minerals | Iron, Iodine, Zinc, Fluoride, Selenium, Copper, Chromium, Manganese, Molybdenum |
| Functions of minerals | Formation of bones and teeth, normal function of the nervous system, transportation of oxygen from the lungs to the body's tissues, taking carbon dioxide from the tissues to the lungs, etc. |
| Sources of minerals | Meat, fish, cereals, milk, dairy foods, vegetables, nuts, etc. |
| Mineral deficiency | Iron deficiency is the most common mineral deficiency worldwide |
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What You'll Learn
Calcium for bone and teeth health
Minerals are inorganic nutrients found in foods and are essential for a healthy body. They are divided into two categories: major minerals and trace minerals. The former is needed in larger amounts, while the latter is needed in smaller amounts. Calcium is a major mineral and is essential for bone and teeth health.
Calcium is a mineral that is needed to maintain a healthy skeletal system. It is used to make bones and teeth and is, therefore, crucial for bone and teeth health. It is also essential for the nervous system and heart health.
The amount of calcium a person needs depends on their age and sex. Men need 1,000 mg per day until age 70 and 1,200 mg after that. Women aged 51 and older need 1,200 mg of calcium per day. The best food sources of calcium are milk and other dairy products like cheese and yogurt. Other food sources of calcium include fish (such as salmon and tuna), leafy green vegetables (such as kale and turnip greens), tofu (set with calcium), and small fish with bones (including sardines and canned salmon). Some foods and drinks are fortified with calcium, including certain brands of juice, soy milk, oatmeal, and breakfast cereal.
Calcium is also important for protecting older adults from osteoporosis. It promotes the healthy functioning of our muscles and immune system. Strong muscles help with balance and reduce the risk of falling and breaking bones. In adults, too little vitamin D over time can cause osteomalacia, a painful condition that makes bones and muscles weak and more likely to break.
In addition to calcium, other major minerals include phosphorus, magnesium, sulfur, potassium, sodium, and chloride. These minerals are also important for bone and teeth health, as they are used to build and maintain strong bones and teeth.
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Iron for red blood cell function
Iron is an essential mineral for human health, with a variety of functions in the body. One of its most critical roles is in red blood cell function and production.
Iron is a crucial component of hemoglobin, the molecule in red blood cells responsible for carrying oxygen throughout the body. About 70% of the body's iron is found in hemoglobin. When red blood cells are unable to function after approximately 120 days in circulation, they are reabsorbed by the spleen, and the iron they contain is recycled by the body.
Iron from dietary sources is absorbed into the body by the cells lining the gastrointestinal tract. It is then released into the bloodstream, where a protein called transferrin attaches to it and delivers it to the liver. In the liver, iron is stored as ferritin and released as needed to make new red blood cells in the bone marrow.
Iron deficiency is relatively common, especially among women and individuals with a low-iron diet. The most common cause of iron deficiency is blood loss, which can occur through various conditions affecting the gastrointestinal tract, genitourinary tract, respiratory tract, or during pregnancy and childbirth. Maintaining adequate iron levels is crucial for red blood cell function, as a deficiency can lead to iron-deficiency anemia, characterized by small and pale red blood cells that are unable to effectively carry oxygen.
To ensure sufficient iron intake, individuals can consume iron-rich foods such as organ meats, eggs, and plant-based sources like legumes and dark leafy greens. Cooking in iron cookware can also increase the iron content of meals. In cases of severe iron deficiency, medicinal iron supplements may be recommended under medical supervision.
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Magnesium for muscle and nerve function
Minerals are inorganic substances that are essential for human health. They are divided into two categories: major minerals and trace minerals. Major minerals are needed in larger amounts, and include calcium, phosphorus, magnesium, sulfur, potassium, sodium, and chloride.
Magnesium is an essential mineral for the functioning of the human body and is involved in more than 300 biochemical reactions. It is found in foods such as nuts, seeds, legumes, green leafy vegetables, and whole grains. It is also available as a supplement.
Magnesium plays a crucial role in nerve transmission and neuromuscular conduction. It helps prevent muscle cramps and improves nerve function. It also has a protective role against excessive excitation that can lead to neuronal cell death. Peripheral nerve injury is a common complication in trauma, and magnesium has been found to promote the regeneration of peripheral nerves. Studies have shown that a high magnesium diet significantly increases magnesium concentrations in nerve tissue, which improves neurobehavioural and electrophysiological functions.
Magnesium also has a role in preventing and treating neurological disorders. It has been studied for its potential benefits in migraine, chronic pain, epilepsy, Alzheimer's, Parkinson's, and stroke, as well as anxiety and depression. For example, magnesium sulfate has been used to prevent cerebral palsy in preterm infants, and it has been found to reduce the risk of moderate to severe cerebral palsy and exert a neuroprotective effect.
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Sodium and Potassium for electrolyte balance
Electrolytes are electrically charged compounds that are essential for the body's basic functions. They are responsible for maintaining electrical neutrality in cells and generating and conducting action potentials in nerves and muscles. Electrolytes are also important for balancing body fluids, regulating heart rhythm, and supporting nerve and muscle function.
Sodium and potassium are two of the most important electrolytes in the body. Sodium is the most abundant electrolyte ion and plays a critical role in helping cells maintain the right balance of fluid. It is also used to help cells absorb nutrients. Sodium is exchanged with potassium across cell membranes as part of active transport. The sodium-potassium adenosine triphosphatase pump regulates the homeostasis between sodium and potassium, pumping out sodium in exchange for potassium, which moves into the cells.
Potassium is the primary electrolyte within body cells and is responsible for supporting heart, nerve, and muscle functions. It also moves nutrients into cells and waste products out of them, supporting the metabolism.
A low-potassium, high-sodium diet is thought to contribute to high blood pressure. Therefore, it is important to consume enough healthy minerals to maintain the correct balance of electrolytes in the body.
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Zinc for immune function
Minerals are inorganic substances that are essential for human health. They are divided into two categories: major minerals and trace minerals. Major minerals are needed in larger amounts—at least 100 milligrams per day—and include calcium, phosphorus, magnesium, sulfur, potassium, sodium, and chloride. Trace minerals, on the other hand, are needed in smaller amounts (less than 100 mg per day) and include iron, iodine, zinc, fluoride, selenium, copper, chromium, manganese, and molybdenum.
Zinc is one of the most abundant trace minerals in the body and is present in every cell. It is a nutrient that plays a crucial role in supporting immune function. Zinc helps to power up the immune system, and a deficiency can impair the ability of immune cells to function properly. Studies have shown that zinc may reduce the risk and duration of infections, such as pneumonia, the common cold, and the flu, especially in children and the elderly. It is a necessary co-factor for the development and function of various immune cells, including macrophages, neutrophils, natural killer cells, and T cells. Additionally, zinc is important for signalling between immune cells, ensuring they can respond appropriately to external stimuli.
Zinc also possesses powerful antioxidant properties, which help to prevent heart disease, fight cancer, and protect the liver. It aids in nutrient assimilation, muscle building, and improving brain function. Zinc is involved in the creation of dopamine, a "feel-good" hormone that is vital for memory and focus. Maintaining adequate zinc levels can help keep hormones balanced, and a deficiency may increase the risk of infertility or diabetes.
Zinc can be obtained from dietary sources such as organ meats, eggs, and certain nuts and seeds. It is also available as a dietary supplement, although it is recommended to consult a doctor before taking any mineral supplements.
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Frequently asked questions
Minerals are inorganic nutrients found in foods. They are essential for the body to work properly.
The most important minerals in our diet are calcium, iron, magnesium, zinc, potassium, sodium, chloride, phosphorus, and manganese.
Major minerals are needed in the diet in amounts of 100 milligrams (mg) or more each day. They include calcium, phosphorus, magnesium, sulfur, potassium, sodium, and chloride. Trace minerals, on the other hand, are needed in smaller amounts (less than 100 mg per day). Examples of trace minerals include iron, iodine, zinc, fluoride, selenium, copper, chromium, manganese, and molybdenum.
A healthy balanced diet containing a variety of whole foods should provide all the minerals you need. Good sources of minerals include organ meats, eggs, nuts, seeds, berries, dairy, and leafy green vegetables.
