Most abundant elements in the human body
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Major Elements in the Human Body: Oxygen, Carbon, Hydrogen, and Nitrogen
The most abundant elements in the human body are oxygen, carbon, hydrogen, and nitrogen. These four elements make up the vast majority of the body’s mass and are essential components of proteins, fats, carbohydrates, and nucleic acids, which are the building blocks of organs and tissues .
Bulk Elements: Calcium, Phosphorus, Potassium, Sodium, Chlorine, and Sulfur
Calcium and Phosphorus
Calcium is the most abundant mineral in the human body, accounting for about 2% of body weight, with 99% stored in the skeleton as hydroxyapatite crystals Portale2009Berner1988. Phosphorus is the sixth most abundant element, making up about 1% of total body weight, with 85% found in bones and the rest in soft tissues and fluids .
Potassium, Sodium, and Chlorine
Potassium, sodium, and chlorine are also present in significant amounts and are crucial for maintaining fluid balance, nerve transmission, and muscle function Zhou2012Walter2023.
Sulfur
Sulfur is the seventh most abundant element in the body and is mainly supplied through the amino acid methionine. It plays a key role in protein synthesis and metabolic processes Taylor2019Zhou2012.
Essential Trace Elements: Magnesium, Zinc, and Silicon
Magnesium
Magnesium is the fourth most abundant element in the body and is essential for many metabolic reactions, nerve transmission, and energy use at the cellular level Tapiero2003Walter2023.
Zinc
Zinc is one of the most abundant trace elements after iron, with about 2 to 3 grams present in the body, mainly in muscles and bones. It is vital for enzyme function, protein structure, and regulation of genetic information Ghaffari2018Ingenbleek2013Walter2023.
Silicon
Silicon is the third most abundant trace element and is especially associated with connective tissues such as bone, skin, and blood vessels .
Other Essential Elements
Other elements present in smaller but essential amounts include iron, manganese, copper, cobalt, and molybdenum. These are required for various biochemical and physiological functions Zhou2012Walter2023.
Conclusion
In summary, the most abundant elements in the human body are oxygen, carbon, hydrogen, and nitrogen, followed by bulk elements like calcium, phosphorus, potassium, sodium, chlorine, and sulfur. Essential trace elements such as magnesium, zinc, and silicon, along with several others, are also critical for health and proper body function Portale2009Tapiero2003Ingenbleek2013+5 MORE.
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