How is vitamins used in our body




















Part of an enzyme needed for energy metabolism; important to nerve function. Found in all nutritious foods in moderate amounts: pork, whole-grain or enriched breads and cereals, legumes, nuts and seeds. Riboflavin vitamin B2.

Part of an enzyme needed for energy metabolism; important for nervous system, digestive system, and skin health. Meat, poultry, fish, whole-grain or enriched breads and cereals, vegetables especially mushrooms, asparagus, and leafy green vegetables , peanut butter.

Part of an enzyme needed for protein metabolism; helps make red blood cells. Folic acid. Part of an enzyme needed for making DNA and new cells, especially red blood cells. Leafy green vegetables and legumes, seeds, orange juice, and liver; now added to most refined grains. Antioxidant ; part of an enzyme needed for protein metabolism; important for immune system health; aids in iron absorption.

Found only in fruits and vegetables, especially citrus fruits, vegetables in the cabbage family, cantaloupe, strawberries, peppers, tomatoes, potatoes, lettuce, papayas, mangoes, kiwifruit. Fat-soluble vitamins are stored in the body's cells and are not excreted as easily as water-soluble vitamins. They do not need to be consumed as often as water-soluble vitamins, although adequate amounts are needed. If you take too much of a fat-soluble vitamin, it could become toxic.

This article explains what vitamins are, what they do, and which foods are good sources. Follow the links in blue below for more information about each vitamin. Vitamins are organic substances present in minute amounts in natural foodstuffs. Having too little of any particular vitamin may increase the risk of developing certain health issues. A vitamin is an organic compound, which means that it contains carbon.

It is also an essential nutrient that the body may need to get from food. Vitamins A, D, E, and K are fat-soluble. The body stores fat-soluble vitamins in fatty tissue and the liver, and reserves of these vitamins can stay in the body for days and sometimes months. Water-soluble vitamins do not stay in the body for long and cannot be stored. They leave the body via the urine.

Because of this, people need a more regular supply of water-soluble vitamins than fat-soluble ones. Vitamin C and all the B vitamins are water-soluble. Why is folate, another form of B9, important? Learn more about getting enough vitamin D. What are the symptoms of vitamin E deficiency? Many people in the United States take multivitamins and other supplements, though these may not be necessary or helpful, according to research.

If you make this change slowly, you will get used to the difference in taste. Eating more fresh vegetables and fruit also helps — they are naturally low in sodium and provide more potassium. Get your sauce and dressing on the side and use only as much as you need for taste.

Read about this topic in Spanish. Food and Drug Administration toll-free druginfo fda. Dietary Guidelines for Americans DietaryGuidelines usda. NIA scientists and other experts review this content to ensure it is accurate and up to date. Vitamins and minerals are two of the main types of nutrients that your body needs to survive and stay healthy. Find information on some of the essential vitamins recommended for older adults and how to get the recommended amount within your diet.

If you are over age 70, you need at least 20 mcg IU , but not more than mcg 4, IU. If you are age 51—70, you need at least 15 mcg IU each day, but not more than mcg 4, IU. You can get vitamin D from fatty fish, fish liver oils, fortified milk and milk products, and fortified cereals. Vitamin B12 2. You can get this vitamin from meat, fish, poultry, milk, and fortified breakfast cereals. Some people over age 50 have trouble absorbing the vitamin B12 found naturally in foods.

They may need to take vitamin B12 supplements and eat foods fortified with this vitamin. Calcium Men age need 1, mg each day. Men age 71 need 1, mg each day. Calcium is a mineral that is important for strong bones and teeth, so there are special recommendations for older people who are at risk for bone loss. You can get calcium from milk and other dairy, some forms of tofu, dark-green leafy vegetables, soybeans, canned sardines and salmon with bones, and calcium-fortified foods.

Magnesium mg each day. This mineral, generally, is found in foods containing dietary fiber, such as green leafy vegetables, whole grains, legumes, and nuts and seeds. Breakfast cereals and other fortified foods often have added magnesium. Large doses may cause nausea, abdominal cramps, headaches, fatigue, kidney stones and diarrhoea. Excessive amounts of vitamin C in the body can also interfere with medical tests, such as diabetes tests, giving a false result.

Some vitamin and omega-3 fatty acid deficiencies can lead to emotional disturbances. However, if you are feeling run down, it is more likely to be due to stress, depression or unhealthy lifestyle habits such as insufficient sleep or smoking , rather than a vitamin deficiency. Vitamin E is widely promoted as a beneficial antioxidant that can help prevent heart disease. Unfortunately, several large-scale reviews have conclusively found no evidence that vitamin E supplements prevent death from heart disease.

In fact, there may be greater risk of all-cause death from taking such supplements. Vitamin A in large doses does not cure cancer and can be toxic, particularly if taken as pills rather than food. There is some evidence that vitamin E could play a small role in preventing some cancers although, equally, there is evidence that it could speed up the onset of other types of cancer.

However, this has not been proved or disproved. While it is argued by some that megadoses of antioxidants can help with the effectiveness of conventional cancer treatments, such as chemotherapy and radiotherapy, the evidence is far from supporting this. In fact, it has been shown that megadoses of antioxidants can actually interfere with some medical treatments for cancer by helping to protect the cancer cells that the therapies aim to destroy. Vitamin E is often singled out as the potential fountain of youth.

However, there is no evidence that taking large doses of any vitamin can either stall or reverse the effects of ageing. Neither can any one vitamin restore a flagging sex drive or cure infertility.

In developed countries like Australia, vitamin deficiency is rare, but the inadequate intake of some vitamins, as a result of an unhealthy diet, is not so rare and has been linked to a number of chronic diseases. These include cardiovascular disease, cancer and osteoporosis.

There is ongoing research to study the effects of taking vitamin supplements to prevent chronic disease, and evidence around nutrition and diet is constantly changing.

It is important that you consult with your doctor before taking vitamin supplements in high doses. This page has been produced in consultation with and approved by:.

The size of a standard drink can vary according to the type of alcohol. The Alexander technique stresses that movement should be economical and needs only the minimum amount of energy and effort. A common misconception is that anorexia nervosa only affects young women, but it affects males and females of all ages. Antioxidants scavenge free radicals from the body's cells, and prevent or reduce the damage caused by oxidation.



0コメント

  • 1000 / 1000