What Chemical Elements are Found in the Human Body? (2024)

Chemical elements are the building block of life. They make up the staggering variety of molecules that are combined to form DNA, cellular organelles, cells, tissues, and organs. This article will discuss those elements which are present in the human body, the proportion of them, and the various essential functions they play.

What Chemical Elements are Found in the Human Body? (2)Image Credit: bestber/Shutterstock.com

Elements that make up the human body

The body is, for all intents and purposes, an extraordinarily complex machine. This requires a multitude of parts all working together in complicated relationships from the micro- to macromolecular level. The structure of the building blocks that make up the sum of these parts, such as proteins and nucleic acids, is determined by the proportion and interaction of chemical elements.

Some elements are much more common than others. The human body is approximately 99% comprised of just six elements: Oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. Another five elements make up about 0.85% of the remaining mass: sulfur, potassium, sodium, chlorine, and magnesium. All of these 11 elements are essential elements.

The remaining 0.15% of the human body is comprised of trace elements. The combined mass of the trace elements does not add up to the mass of magnesium, which is the least common of the non-trace elements. Some of the trace elements (about a dozen or so) may be essential for life, based on laboratory evidence.

The function of chemical elements in the body

Most chemical elements found in the human body play a vital role. Some trace elements, such as titanium and cesium, may be contaminants. Some, such as lead, mercury, arsenic, and cadmium are active toxins depending on the amount present.

The function of the essential elements in the human body, by order of percentage of mass, are as follows:

Oxygen

Oxygen is the most common element in the human body, comprising approximately 65.0% of body mass. Most of the oxygen present is found in the form of water. Oxygen plays a critical role in metabolism and respiration and the element is found in every major organic molecule in the body including proteins, carbohydrates, fats, and nucleic acids.

Carbon

Carbon is the next most common element in the human body, making up 18% of the body by mass. Its role is mostly structural, forming the “backbone” of many organic molecules.

Hydrogen

Hydrogen is the most abundant element in the universe (about 75% of total mass) and makes up around 10% of the human body by mass. It is present in the form of water (along with oxygen) as well as being an important element in organic molecules.

Nitrogen

Nitrogen comprises 3% of the human body by mass. It is found in all organisms in molecules such as amino acids (which make up proteins), nucleic acids (DNA and RNA), and adenosine triphosphate (ATP), an essential energy transfer molecule.

Calcium

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Calcium is the most abundant metal in the human body, at around 1.4% by mass. Arguably its most well-known function is in the formation of bones and teeth and lack of calcium in the diet can lead to a variety of degenerative conditions. Other important roles in the human body include protein synthesis, maintaining the potential difference across cell membranes, and acting as second messengers in signal transduction pathways.

Phosphorus

Phosphorus is highly reactive, and because of this property, it is never found as a free element on Earth. Phosphates are essential to life, and this bound form of phosphorus is a major component of essential organic molecules such as phospholipids, ATP, and nucleic acids. It comprises 1.1% of the total body mass of the human body.

Potassium

Potassium makes up less than 1% of body mass. It plays a vital role in nerve transmission via the transfer of potassium ions across nerve cell membranes.

Sulfur

The tenth most common element in the universe and the fifth most common on Earth, sulfur plays an essential role in the human body. It is found in the body almost always in the form of metal sulfides and organosulfur compounds. Sulfur is also a major structural element of the protein keratin, which is found in skin and hair.

Sodium

Sodium, an alkali metal, is commonly found in salt. Sodium ions contribute to osmotic pressure as they are the major cation in the extracellular fluid (ECF.) Sodium also plays a key role in nerve transmission.

Chlorine

Chlorine plays an essential role in maintaining the acid-base balance of blood, along with the formation of tendons, teeth, and bones. It is commonly found in salts and in combination with potassium and sodium in the body. It also contributes to liver function and helps to eliminate organic waste.

Magnesium

Magnesium is the least common of the essential elements in the human body. Some 300 or so enzymes require magnesium ions to function properly, and magnesium ions interact with compounds such as DNA, RNA, and ATP.

Trace Elements

Trace elements play many roles, some more important than others, whilst others contribute no discernible function whatsoever. Some are actively toxic to humans.

The three most abundant essential trace elements are iron, fluorine, and zinc. Iron plays an essential role in human health as part of hemoglobin, which transports oxygen around the body in the blood. Fluorine is important for teeth. Zinc is required by over 300 enzymes and 1000 transcription factors and is vital for eye health and reproductive organ growth.

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In Conclusion

The main source of all of these elements is diet. Some of the elements are more essential than others and they are found in a staggering array of compounds and molecules in the human body.

Some can even cause active harm to the body and the levels at which they are present in the body can determine just how harmful the effects are. The proportions of chemical elements vary from person to person depending on a wide variety of factors, but as a rule, they are mostly uniform across the species.

What are you really made of?

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What Chemical Elements are Found in the Human Body? (2024)

FAQs

How many chemicals are found in the human body? ›

Just as you contain multitudes, your body contains multiple chemicals—a total of 109, in fact, including 55 that have never been reported in humans before, and 42 “mystery chemicals” that come from unknown environmental sources, according to a new study from UC San Francisco.

What are the 25 elements found in the human body? ›

Almost 99% of the mass of the human body is made up of six elements oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
...
Some elements present in the human body are:
  • Arsenic.
  • Chromium.
  • Copper.
  • Carbon.
  • Cobalt.
  • Calcium.
  • Chlorine.
  • Fluorine.

What are the 14 elements in the human body? ›

About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.

What are 4 elements most found in the human body? ›

The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.

What is the most important chemical in the human body? ›

Oxygen is the most abundant element in the human body accounting for approximately 65% of a person's mass.
...
Elements in the Human Body.
ElementPercent by Mass
Oxygen65
Carbon18
Hydrogen10
Nitrogen3
9 more rows
2 Dec 2019

What are the two most important chemicals in the body? ›

Almost 99% of the human body mass consists of six main elements; namely: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphor; 65–90% of each cell in the body is composed of water, as such, oxygen and hydrogen are among the main constituents of the human body. Chemical symbol O2; 65% of the human body weight.

Are all 92 elements found in the human body? ›

The human body is approximately 99% comprised of just six elements: Oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. Another five elements make up about 0.85% of the remaining mass: sulfur, potassium, sodium, chlorine, and magnesium. All of these 11 elements are essential elements.

What four elements make up 97% of the human body? ›

Of the elements found in the human body, four of them make up the largest percentage of our body weight (96.2%). The four elements are oxygen, hydrogen, carbon, nitrogen.

What 4 elements make up 96% of the human body? ›

Just four of these – carbon (C), oxygen (O), hydrogen (H) and nitrogen (N) – make up about 96% of the human body. 25 elements are known to be essential to life.

What are the 21 elements essential for life? ›

Calcium, carbon, chlorine, cobalt, copper, fluorine, hydrogen, iodine, iron, magnesium, manganese, molybdenum, nitrogen, oxygen, phosphorus, potassium, selenium, sodium, sulfur, and zinc are regarded as the 21 elements essential for life.

What are the 20 essential elements? ›

Nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, boron, chlorine, iron, manganese, zinc, copper, molybdenum, and nickel. Other elements that have been proposed as candidates for essential or beneficial elements include chromium, vanadium, and titanium, although strong evidence is lacking at this time.

What are the 59 elements of the human body? ›

The human body consists of 60 different elements, including oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, potassium, sulfur, sodium, chlorine, magnesium and 49 other elements in trace quantities.

Do we have gold in our body? ›

An adult human body weighing 70 kg contains about 0.2 milligrams of gold. It's been found that the element plays an important health function, helping to maintain our joints, as well as facilitating the transmittal of electrical signals throughout the body.

What is the hardest chemical in your body? ›

Tooth enamel is the hardest substance in the human body, but it needs your help to keep it strong in the fight against cavities.

What are 3 important compounds in the body? ›

Organic compounds essential to human functioning include carbohydrates, lipids, proteins, and nucleotides.

What are the 5 main chemicals of life? ›

Classification of the Essential Elements

1. Note that most living matter consists primarily of the so-called bulk elements: oxygen, carbon, hydrogen, nitrogen, and sulfur—the building blocks of the compounds that constitute our organs and muscles.

What is the most important chemical of all? ›

Sulfuric acid is the world's most important industrial chemical! In North America we produce about 50 million tons a year, mostly by burning sulfur to form sulfur dioxide which is then reacted with water. Why do we need all that sulfuric acid? Primarily to produce fertilizer.

What chemicals does the body need to survive? ›

Oxygen (65%), carbon (18%), hydrogen (10%), nitrogen (3%), calcium (1.5%) and phosphorus (1%) are the most common. Substitute sulfur, which in our bodies makes up 0.25% of mass, for calcium and you have the chemical ingredients for all life.

Which chemical is more harmful to humans? ›

Perhaps the most deadly chemical in the workplace, sulfuric acid is a critical component in the manufacture of most fertilizers, batteries, acids, and metals. Its extremely corrosive nature makes it exceptionally dangerous in its most common concentrations.

Are there 92 or 94 natural elements? ›

Elements 1 through 92 (except for elements 43 and 61) occur naturally on Earth, although some are only present in extremely small quantities. The elements following uranium on the periodic table are only produced artificially, and are known as the transuranium or transuranic elements.

Are elements 93 118 are man made? ›

(You could also consider atomic numbers 93–98 synthetic elements because they are almost exclusively man-made.)

What 5 elements make up over 99% of the human body? ›

It is thus no wonder that 99% of the atoms in the human body come from six elements: Hydrogen (62.9%), oxygen (almost 24%), carbon (nearly 12%), nitrogen (nearly 0.6%), calcium (0.24%) and phosphorus (0.14%). Calcium is on the list as it is essential for our skeleton, which contains 99% of the calcium in our body.

What chemical is 60% of your food made up of? ›

Water is a nutrient that makes up 60% of our body weight. It is important in many functions, it is part of every cell in every tissue in the body. Water carries other nutrients to all parts of the body, it carries waste out of the body and it helps to regulate body temperature.

What elements make up 99 of the body? ›

Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

What elements create life? ›

From the mightiest blue whale to the most miniscule paramecium, life as we know it takes dramatically different forms. Nonetheless, all organisms are built from the same six essential elemental ingredients: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur (CHNOPS).

What are the four elements of life? ›

The four basic elements of life are: Oxygen, hydrogen, nitrogen and phosphorus. These four elements are found in abundance in both the human body and in animals. There are other elements that compose the human body, but the four we've highlighted participate in all life processes.

Which metal is highest in human body? ›

So, most abundant element (transition) in human body is Iron.

What elements make up 96% of all living matter? ›

25 chemical elements are essential to life.

Four elements—carbon (C), oxygen (O), hydrogen (H), and nitrogen (N)—make up 96% of living matter. Most of the remaining 4% of an organism's weight consists of phosphorus (P), sulfur (S), calcium (Ca), and potassium (K).

What are the 42 elements? ›

The Elements, sorted by Atomic Number
Atomic NumberSymbolName
41NbNiobium
42MoMolybdenum
43TcTechnetium
44RuRuthenium
76 more rows

What are the 5 spiritual elements? ›

According to some traditions, everything in the universe comes from the five elements: wood, fire, earth, water, and metal.

What are the 7 element of life? ›

The new catalog includes all of the so-called “CHNOPS elements” – carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur – known to be the building blocks of all life on Earth. This is the first time that measurements of all of the CHNOPS elements have been made for such a large number of stars.

What are the 12 main elements? ›

The twelve elements of nature are Earth, Water, Wind, Fire, Thunder, Ice, Force, Time, Flower, Shadow, Light and Moon. Each of these elements are simplified terms for higher and complex substances.

What are the 17 essential elements? ›

The 17 Essential Plant Elements include nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, boron, chlorine, iron, manganese, zinc, copper, molybdenum, and nickel. The non-mineral essential plant elements include hydrogen, oxygen, and carbon. These are either taken up as a gas or water.

What are the 13 major elements of life? ›

Match
  • CHOPKINS CaFe Mg NaCl. 1)Carbon. 2)Hydrogen. 3)Oxygen. 4)Phosphorus. 5)Potassium. 6)Iodine. 7)Nitrogen. 8)Sulfur. 9)Calcium. 10.Iron. 11.Magnesium. 12.Sodium. 13.Chlorine.
  • Carbon. C.
  • Hydrogen. H.
  • Oxygen. O.
  • Phosphorus. P.
  • Potassium. K.
  • Iodine. I.
  • Nitrogen. N.

What 5 elements make up 98% of the human body? ›

Answer and Explanation: About 98% of the human body is composed of only six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorous - is a true statement.

Are humans made of carbon 12? ›

Carbon-12; one of 5 elements in the human DNA is composed of 6 protons, 6 electrons and 6 neutrons, which equates to 666. Carbon-12 is the most abundant of the two stable isotopes of the element carbon, accounting for 98.89% of carbon.

Which six elements that make up 98% of the human body? ›

98% of living body is formed of six elements carbon, hydrogen, nitrogen, oxygen and calcium and phosphorus. 63% of human body contains water, so oxygen and hydrogen are present in large quantity.

How much is a human body worth? ›

But in reality, Medical Transcription estimates, the average price of a human dead body is more likely to fetch around $550,000 (with a few key body parts driving up the price). Contrary to popular belief, you are not allowed to sell your organs for transplantation purposes in the US. (Nor in any developed country).

Is there platinum in the human body? ›

Reported platinum concentrations in body fluids and tissues, in particular those dating from the 1970s, should be treated with caution because of questionable analytical reliability. Background levels of platinum in human blood from Australia were reported to be in the range 0.1-2.8 µg/litre, mean 0.6 µg/litre (24).

Which food contains gold? ›

Among the dishes and beverages in which edible gold is implemented there are cakes and sweet desserts, soups, pastas, risottos, sushi, co*cktails and wines. Since it is used as tasteless garnish, edible gold is usually the ingredient at the top of the dish at direct contact with food.

What are the 60 chemicals in the human body? ›

The human body consists of 60 different elements, including oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, potassium, sulfur, sodium, chlorine, magnesium and 49 other elements in trace quantities.

What are the 12 chemicals? ›

These were a group of 12 highly persistent and toxic chemicals: aldrin, chlordane, DDT, dieldrin, endrin, heptachlor, hexachlorobenzen, mirex, polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and toxaphen.

Are we all made of chemicals? ›

Everything you can breathe, see, ingest or touch is made up of chemicals. All matter, including us, is made of chemicals. Chemistry is the study of the composition, structure, properties and reactions of matter. Everything is made of chemicals.

What are the 4 major elements 96% of the body? ›

Just four of these – carbon (C), oxygen (O), hydrogen (H) and nitrogen (N) – make up about 96% of the human body. 25 elements are known to be essential to life.

What are king of chemicals? ›

Sulfuric acid is sometimes referred to as the “king of chemicals” because it is produced worldwide in... Due to its affinity for water, pure anhydrous sulfuric acid does not exist in nature.

What is the most powerful chemical? ›

Azidoazide azide is the most explosive chemical compound ever created. It is part of a class of chemicals known as high-nitrogen energetic materials, and it gets its "bang" from the 14 nitrogen atoms that compose it in a loosely bound state. This material is both highly reactive and highly explosive.

Which chemical is called the king of all chemicals? ›

Hence, Sulphuric acid ( H 2 SO 4 ) is known as king of chemicals.

What are the 3 chemicals in the brain? ›

Brain Chemistry & Your Mood: 4 Hormones That Promote Happiness
  • Serotonin.
  • Dopamine.
  • Endorphins.
  • Oxytocin.
13 Sept 2021

What are the 6 elements most necessary for life? ›

The new catalog includes all of the so-called “CHNOPS elements” – carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur – known to be the building blocks of all life on Earth.

Are humans just elements? ›

Really, aren't we all just a collection of atoms and molecules? For as complicated as humans (and other life) are, 99% of our bodies are composed of just six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

What chemicals does your body naturally produce? ›

Four main brain chemicals, dopamine, serotonin, oxytocin and endorphins, all play a role in how you experience happiness. Dopamine. Dopamine is a neurotransmitter produced by the hypothalamus, a small region of the brain that helps you feel pleasure.

Can humans create chemical elements? ›

A synthetic element is one of 24 known chemical elements that do not occur naturally on Earth: they have been created by human manipulation of fundamental particles in a nuclear reactor, a particle accelerator, or the explosion of an atomic bomb; thus, they are called "synthetic", "artificial", or "man-made".

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