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What Is Metabolism And How It Works?

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Nebadita (Diet & Health Expert), M.S
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Jennifer Roelands
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by   Jennifer Roelands
Jennifer Roelands ✔ Verified Expert
Jennifer Roelands, MD, is an integrative remedy skilled OB/GYN with 18 years of experience. She is the founder and director of Well Woman MD, which…
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—Written by   Nebadita (Diet & Health Expert), M.S
Nebadita (Diet & Health Expert), M.S
Nebadita is experienced in the field of nutrition, health, fitness, and more. Nebadita earned Master Degree from National Institute of Nutrition, Hyderabad and currently serving in the Eastern branch of ICMR. Know More. Learn about our editorial process..
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Updated on May 30, 2026
Why This Was Updated
We continuously monitor the health landscape and update our articles to reflect the latest evidence.

Updated on May 30, 2026

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—Published on June 5, 2020
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The Fast Facts

  • In general terms, we can define metabolism in such a way, that metabolism is a chemical and physiological response that helps any organ to keep their lives healthy.
  • The hormone released by this gland plays an important role in determining how fast and how slow the chemical reaction of metabolism is in a person’s body.
  • The breakdown of molecules to obtain energy is called in-digestibility, which releases a large amount of energy, that is why indigestion is known as destructive metabolism.
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Often many people has doubts regarding how metabolism works?  Metabolism works as a significant process for our body. It is a collection of chemical reactions in the body cells. Everything we eat for enhancing our physical energy, synthesis of biological substances all that.

Metabolism assists in energy and formation of cell formation, by critical chemical response. The function of making the necessary molecules that are essential for the body growth and smooth functioning. The creation of energy is one of the main components of metabolism.

Definition of Metabolism.

In general terms, we can define metabolism in such a way, that metabolism is a chemical and physiological response that helps any organ to keep their lives healthy. It caters to the need for energy for basic physical functions such as digestion, blood circulation, cell growth and physical repair.

Types of Metabolism.

Metabolism can be divided into two sections, such as;

In-digestibility.

The breakdown of molecules to obtain energy is called in-digestibility, which releases a large amount of energy, that is why indigestion is known as destructive metabolism. It removes organic substances from the body.

Anabolism or Anabolic.

The synthesis of all essential compounds through the cell is anabolic action. Therefore, anabolic or anabolism helps in cell formation by using the energy present in the body, so anabolic is known as creative metabolism.

Weight Gain Due to Metabolism Problems.

Weight gain is a complex process. Sleep, physical activities, stress, diet, environmental effects, changes in hormones and genetic weight gain can be the main cause. Metabolism is a natural process that slows down such problems.

The main reason why our body gained weight is that we consume more calories according to our physical activities, that extra calories later turn into fat and accumulate in the body, which increases obesity. Our body weight will remain constant if we burn more calories that we are consuming.(1),(2)

To burn calories, we should take food at a regular interval as well as in small quantities. You can also burn more calories in your body by using a workout habit.

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Read Now: Importance of Nutrition.

How Metabolism Works?

First of all, it is necessary to know that metabolism can be cured with the help of vegetarian and non-vegetarian food. Plants take energy from sunlight, so that they react with chlorophyll, organic dioxide and water to make sugars and this process is called photosynthesis.

So, people who eat animals and plants receive sugar. The body breaks down sugars through metabolism, thereby gaining energy and this energy is distributed as fuel through the cell of the body.

Metabolism stores sugars into tissues and works to use stored energy when needed. There are many hormones that control the condition and direction of metabolism, including thyroid.

The hormone released by this gland plays an important role in determining how fast and how slow the chemical reaction of metabolism is in a person’s body. However, metabolism is a very complex chemical process that shows you how much energy is provided in your body.(3)

Read Now: 7 Easiest and Natural Ways to Boost Metabolism.
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The Function of Metabolism with Essential Nutrients.

Food provides various types of nutrients, which are essential for the maintenance and repair of the body tissues. The diet only supplies water, minerals, vitamins, proteins, oxygen, nitrogen, phosphorus and about 20 essential nutrients;

Carbohydrates.

Foods provides carbohydrates in three types – starch, sugar and fiber. Body tissue depends on glucose for all activities.(4)

Health Benefits of Brown Rice
Brown Rice

Carbohydrates and sugars produce glucose through metabolism. Most people consume about half of their diet in the form of carbohydrates. It comes from rice, bread, wheat, potatoes, pasta and macaroni, etc.

Protein.

Protein is known as building block of our body. It is helpful for cell structure, haemoglobin formation and other functions of the body. Metabolism helps to conduct this works smoothly.

egg
Egg

DNA and RNA plays an important role in supplying nitrogen to genetic material and energy production. Protein is essential for nutrition, essential amino acids are found from proteins. These amino acids are covered – lysine, tryptophan, methionine, leucine, isoleucine, phenylalanine, valine, threonine.

The highest amount of protein is derived from eggs, milk, soybeans, meat, vegetables and cereals.

Read Now: Immune Boosting Diet.

Fat.

Fat is the main source of energy, it generates twice the energy from carbohydrates and proteins. It create cellular structure in the body and create a protective loop around the vital body parts.

olive-oil
Olive Oil

Fats provide a reserve storage for energy. Essential fatty acids are linoleic and arachidonic.(5)

Minerals.

Minerals in foods do not work directly in energy supply but it is important for the body. It plays an important role in the body’s metabolism pathway. More than 50 elements are found in the human body, of which 25 elements are necessary.

cruciferous
Vegetables

Important minerals include calcium, phosphorus, sodium, potassium, iron, chloride ions, copper, cobalt, manganese, zinc, magnesium, zinc, fluorine and iodine etc.

Vitamins.

Metabolism contains particularly important vitamins like vitamins A, B2, niacin, pantothenic acid.

Healthy-Fruits Metabolism works
Fruits

These vitamins are essential organic compounds, without which the human body cannot synthesize itself, so all these vitamins must be present in your diet.

Metabolism Pathway.

Chemical reactions of metabolism are arranged in the metabolism pathway, allowing enzymes to move efficiently into cells through the chemical chain in their order. Therefore, enzyme is important for metabolism.

It is closely associated with nutrition and nutrient availability. Bioenergetics is a term that describes biochemical or metabolism pathways by which cells eventually gain energy.

Frequently Asked Questions.

1. Can a slow metabolism really cause weight gain?

A slow metabolism can contribute to weight gain, but it is usually not the only factor. Weight gain often occurs when calorie intake consistently exceeds calorie expenditure. Factors such as poor sleep, stress, hormonal changes, physical inactivity, and dietary habits also play important roles in body weight management.

2. What foods help support a healthy metabolism?

Foods rich in protein, fiber, vitamins, and minerals may help support normal metabolic function. Examples include eggs, fish, lean meats, legumes, fruits, vegetables, whole grains, nuts, and dairy products. Staying hydrated and eating balanced meals regularly may also help maintain healthy energy metabolism.

3. How can I naturally improve my metabolism?

Some natural ways to support metabolism include regular exercise, strength training, adequate sleep, stress management, proper hydration, and consuming a nutrient-rich diet. Building muscle mass and staying physically active can help increase daily calorie expenditure and support long-term metabolic health.

Bottom Line.

Metabolism is a chemical reactions which enhancing our physical energy, synthesis of biological substances. It plays a crucial role in our overall health.

However, person with good metabolism can prevent several health issues with an effective way. With a positive metabolic rate you can digest the food easily. However, those have weak metabolic rate, they have to face several digestive issues.

+5 Sources

Freaktofit has strict sourcing guidelines and relies on peer-reviewed studies, educational research institutes, and medical organizations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and up-to-date by reading our editorial policy.

  1. Metabolic Determinants of Weight Gain in Humans; https://pubmed.ncbi.nlm.nih.gov/31012296/
  2. Energy metabolism, fuel selection and body weight regulation; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2897177/
  3. New research developments and insights from Metabolism; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459594/
  4. Carbohydrates metabolism; https://www.researchgate.net/publication/321938058_Carbohydrates_metabolism
  5. Studies in Fat Metabolism; https://www.jbc.org/article/S0021-9258(18)84103-5/pdf

Last reviewed on May 30, 2026

How we reviewed this article:

ⓘ Sources

FreakToFit follows strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and reputable medical organizations. We only use high-quality, credible sources to ensure the accuracy and integrity of our content.

🕖 History

Our experts continually monitor the health and wellness space, and we update our articles when new information becomes available

Current Version

Written by Nebadita (Diet & Health Expert), M.S

Reviewed by Jennifer Roelands

Updated: May 30, 2026

Jun 5, 2020

Written by Nebadita (Diet & Health Expert), M.S

Reviewed by Jennifer Roelands

The information shared in this article is for educational purposes only and should not replace professional medical consultation. Always speak with a qualified healthcare provider about any health concerns or treatments. Know More

Nebadita (Diet & Health Expert), M.S

Author
Nebadita is experienced in the field of nutrition, health, fitness, and more. Nebadita earned Master Degree from National Institute of Nutrition, Hyderabad and currently serving in the Eastern branch of ICMR. Know More. Learn about our editorial process..

Jennifer Roelands

Health Expert
Jennifer Roelands, MD, is an integrative remedy skilled OB/GYN with 18 years of experience. She is the founder and director of Well Woman MD, which…

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