Metabolismenparentshttps://kidshealth.org/EN/images/headers/P-metabolismBB-enHD-AR1.gifBrush up on metabolism, the chemical reactions in the body's cells that change food into energy, in this article.weight, metabolic, overweight, body composition, body type, enzyme, converting food into energy, how the body uses food, how the body converts food, food as fuel, metabolizing food, anabolism, catabolism, metabolizum, metabalizm, metabolizem, metabalism, metabulism, metabulizum, endocrine, gland, thyroid, thiroyd, thieroyd, pancreas, pancreus, insulin, calorie, glucose, sugar, CD1Endocrinology07/06/200007/10/201909/02/2019Larissa Hirsch, MD07/01/2019c49f4184-c2fc-42f9-b0d5-62d1fafce1a1https://kidshealth.org/ws/RadyChildrens/en/parents/metabolism.html/<h3>What Is Metabolism?</h3> <p>Metabolism (meh-TAB-uh-liz-um) is the chemical reactions in the body's cells that change food into energy. Our bodies need this energy to do everything from moving to thinking to growing.</p> <p>Specific proteins in the body control the chemical reactions of metabolism. Thousands of metabolic reactions happen at the same time &mdash; all regulated by the body &mdash; to keep our cells healthy and working.</p> <h3>How Does Metabolism Work?</h3> <p>After we eat food, the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/digestive.html/">digestive system</a> uses enzymes to:</p> <ul> <li>break proteins down into amino acids</li> <li>turn fats into fatty acids</li> <li>turn carbohydrates into simple sugars (for example, glucose)</li> </ul> <p>The body can use sugar, amino acids, and fatty acids as energy sources when needed. These compounds are absorbed into the blood, which carries them to the cells.</p> <p>After they enter the cells, other enzymes act to speed up or regulate the chemical reactions involved with "metabolizing" these compounds. During these processes, the energy from these compounds can be released for use by the body or stored in body tissues, especially the liver, <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/bones-muscles-joints.html/">muscles</a>, and body fat.</p> <p>Metabolism is a balancing act involving two kinds of activities that go on at the same time:</p> <ul> <li>building up body tissues and energy stores (called anabolism)</li> <li>breaking down body tissues and energy stores to get more fuel for body functions (called catabolism)</li> </ul> <p><strong>Anabolism</strong> (uh-NAB-uh-liz-um), or constructive metabolism, is all about building and storing. It supports the growth of new cells, the maintenance of body tissues, and the storage of energy for future use. In anabolism, small molecules change into larger, more complex molecules of carbohydrates, protein, and fat.</p> <p><strong>Catabolism</strong> (kuh-TAB-uh-liz-um), or destructive metabolism, is the process that produces the energy needed for all activity in the cells. Cells break down large molecules (mostly carbs and fats) to release energy. This provides fuel for anabolism, heats the body, and enables the muscles to contract and the body to move.</p> <p>As complex chemical units break down into more simple substances, the body releases the waste products through the skin, kidneys, lungs, and intestines.</p> <h3>What Controls Metabolism?</h3> <p>Several <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/hormones.html/">hormones</a> of the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/endocrine.html/">endocrine system</a> help control the rate and direction of metabolism. Thyroxine, a hormone made and released by the thyroid gland, plays a key role in determining how fast or slow the chemical reactions of metabolism go in a person's body.</p> <p>Another gland, the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/pancreas.html/">pancreas</a>, secretes hormones that help determine whether the body's main metabolic activity at any one time are anabolic (an-uh-BOL-ik) or catabolic (kat-uh-BOL-ik). For example, more anabolic activity usually happens after you eat a meal. That's because eating increases the blood's level of glucose &mdash; the body's most important fuel. The pancreas senses this increased glucose level and releases the hormone <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/insulin.html/">insulin</a>, which signals cells to increase their anabolic activities.</p> <p>Metabolism is a complicated chemical process. So it's not surprising that many people think of it in its simplest sense: as something that influences how easily our bodies gain or lose weight. That's where <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/calorie-calculations.html/">calories</a> come in. A calorie is a unit that measures how much energy a particular food provides to the body. A chocolate bar has more calories than an apple, so it provides the body with more energy &mdash; and sometimes that can be too much of a good thing. Just as a car stores gas in the gas tank until it is needed to fuel the engine, the body stores calories &mdash; primarily as <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/fats.html/">fat</a>. If you overfill a car's gas tank, it spills over onto the pavement. Likewise, if a person eats too many calories, they "spill over" in the form of excess body fat.</p> <p>The number of calories someone burns in a day is affected by how much that person exercises, the amount of fat and muscle in his or her body, and the person's <strong>basal metabolic rate (BMR)</strong>. BMR is a measure of the rate at which a person's body "burns" energy, in the form of calories, while at rest.</p> <p>The BMR can play a role in a person's tendency to gain weight. For example, someone with a low BMR (who therefore burns fewer calories while at rest or sleeping) will tend to gain more pounds of body fat over time than a similar-sized person with an average BMR who eats the same amount of food and gets the same amount of exercise.</p> <p>BMR can be affected by a person's <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/about-genetics.html/">genes</a> and by some health problems. It's also influenced by body composition &mdash; people with more muscle and less fat generally have higher BMRs. But people can change their BMR in certain ways. For example, a person who exercises more not only burns more calories, but becomes more physically fit, which increases his or her BMR.</p>MetabolismoEl metabolismo es el conjunto de reacciones químicas que tienen lugar en las células del cuerpo para convertir los alimentos en energía. Nuestro cuerpo necesita esta energía para todo lo que hacemos, desde movernos hasta pensar o crecer. https://kidshealth.org/ws/RadyChildrens/es/parents/metabolism-esp.html/d1f4624d-9ba4-4b7c-9486-9426cdbd14d7
Activity: Endocrine SystemDo you know your endocrine glands? Label the parts of the endocrine system.https://kidshealth.org/ws/RadyChildrens/en/kids/bfs-esactivity.html/2c1b2b7b-fe3b-4b7d-84fd-e4925e3a48c0
Blood Test: Basic Metabolic PanelA basic metabolic panel (BMP) is a group of blood tests that provide doctors with clues about how the body is working. Find out why doctors do this and what's involved for teens.https://kidshealth.org/ws/RadyChildrens/en/teens/test-bmp.html/acc56baa-4973-4ec4-a72f-c21527648d02
Blood Test: Basic Metabolic Panel (BMP)A basic metabolic panel (BMP), commonly ordered as part of routine medical exam, is a set of blood tests that gives information about sugar (glucose) and calcium levels, kidney function, and electrolyte and fluid balance.https://kidshealth.org/ws/RadyChildrens/en/parents/blood-test-bmp.html/d899bdac-ae4f-4205-90b1-756fd8a20d93
Blood Test: Comprehensive Metabolic PanelThis group of blood tests provides doctors with clues about how the body is working. Find out why doctors do these tests and what's involved for teens.https://kidshealth.org/ws/RadyChildrens/en/teens/test-cmp.html/292fc821-ecb3-4f42-b473-b816e23480ce
Diabetes CenterDiabetes means a problem with insulin, an important hormone in the body. Find out how children with diabetes can stay healthy and do the normal stuff kids like to do.https://kidshealth.org/ws/RadyChildrens/en/kids/center/diabetes-center.html/0767277a-98f9-4541-b2f6-f3c68f43a94c
Endocrine SystemThe endocrine system influences almost every cell, organ, and function of our bodies. It is instrumental in regulating mood, growth and development, metabolism, and sexual function, among other things.https://kidshealth.org/ws/RadyChildrens/en/teens/endocrine.html/7572f55a-2090-4b77-b6d1-74740e26934d
G6PD DeficiencyG6PD deficiency an inherited condition in which someone doesn't have enough of the enzyme G6PD, which protects red blood cells.https://kidshealth.org/ws/RadyChildrens/en/parents/g6pd.html/370045b4-ac0a-4bda-8cea-65ff2857edf9
Growth ProblemsIn most cases, teens who are small are just physically maturing a bit more slowly than their friends. Occasionally, though, there's a medical reason why some kids and teens stop growing. Find out about growth problems and how doctors can help.https://kidshealth.org/ws/RadyChildrens/en/teens/growth-hormone.html/439c5515-a0d3-425e-9e5d-4cc0fb91d8b4
Healthy EatingGood nutrition and a balanced diet help kids grow up healthy. Here's how to improve nutrition and encourage smart eating habits.https://kidshealth.org/ws/RadyChildrens/en/parents/habits.html/429ff6f2-05a1-4593-a32b-4c6e4837e415
Metabolic SyndromeMetabolic syndrome is a group of health problems that put kids at risk for heart disease and diabetes. With lifestyle changes, many kids improve their health and reduce their risk of disease.https://kidshealth.org/ws/RadyChildrens/en/parents/metabolic-syndrome.html/94bee442-7c12-4fe0-b2cb-4f9335c5424e
MetabolismYour body gets the energy it needs from food through a process called metabolism. Get all the facts on metabolism in this article.https://kidshealth.org/ws/RadyChildrens/en/teens/metabolism.html/d4eeeba5-5457-40c0-8915-fa1a8097c087
Movie: Endocrine SystemWatch this movie about your endocrine system, the system that produces hormones.https://kidshealth.org/ws/RadyChildrens/en/kids/esmovie.html/59709fac-252f-47fe-ba77-77b43bfbd142
Other Diseases That Are More Common in People With Type 1 DiabetesKids and teens with type 1 diabetes have a greater risk for thyroid disease, celiac disease, and Addison's disease. Learn more about these autoimmune disorders.https://kidshealth.org/ws/RadyChildrens/en/parents/other-diseases.html/407bd30c-879d-4f07-869d-5fcb5f683660
What Are Glands?You've heard of glands, but what are they? Find out in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/glands.html/18e35f17-fa0b-4977-b705-dff0c7e529c7
What Is the Thyroid?Do you know just how important the thyroid is? It helps you grow and affects your energy level.https://kidshealth.org/ws/RadyChildrens/en/kids/thyroid.html/8484750c-4f47-4003-aaec-eb0992df2964
Your Child's Weight"What's the right weight for my child?" is one of the most common questions parents have. It seems like a simple one, but it's not always easy to answer.https://kidshealth.org/ws/RadyChildrens/en/parents/childs-weight.html/47c960bc-61c9-4a05-933d-50f57967c0a7
Your Endocrine SystemThe endocrine system produces hormones, which are needed for proper body function and growth. Find out more in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/endocrine.html/e74a807b-43a3-42cf-971a-fcb15443e5e5
kh:age-allAgesOrAgeAgnostickh:clinicalDesignation-endocrinologykh:genre-articlekh:primaryClinicalDesignation-endocrinologyBody Basicshttps://kidshealth.org/ws/RadyChildrens/en/parents/general/body-basics/3113dcac-be5e-44dd-842b-232a50bfd496Diabetes Basicshttps://kidshealth.org/ws/RadyChildrens/en/parents/diabetes-center/diabetes-basics/e7c6c2d5-789f-475d-bead-54cfac997f23Body Basics: Cerebral Palsyhttps://kidshealth.org/ws/RadyChildrens/en/parents/cerebralpalsy-center/cp-bb/2d58aab5-7b9d-45d2-bb45-49f5c3613e1bBody Basics: Cancerhttps://kidshealth.org/ws/RadyChildrens/en/parents/cancer-center/body-basics/d4ed9bbd-3f41-4885-a3e2-6d755d332de2Body Basics: Sports Medicinehttps://kidshealth.org/ws/RadyChildrens/en/parents/sports-medicine-center/body-basics/bf343536-f9b0-49b1-8690-95fd2bff9a42