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Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
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The Colonization of Land02:22

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Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they produced oxygen. Eventually, oxygen saturated the oceans and entered the air, resulting in an increase in atmospheric oxygen concentration, known as the oxygen revolution approximately 2.3 billion years ago. Therefore, organisms that could use oxygen for cellular respiration had an advantage. More than 1.5 years ago, eukaryotic cells and...
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Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
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Roles of Electrolytes: Calcium and Phosphate01:27

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Calcium and phosphate are essential electrolytes in the human body, with calcium being the most abundant mineral. Around 99% of the body's calcium is stored in the skeleton and teeth, forming a crystal lattice of mineral salts in combination with phosphates. Calcium plays crucial roles in various bodily functions such as blood clotting, neurotransmitter release, muscle tone maintenance, and nervous and muscle tissue excitability.
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Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
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Cells and tissues must meticulously coordinate their activities for the normal functioning of the human body. Therefore, they exhibit socially responsible behavior - resting, growing, dividing, differentiating, or dying - for the organism’s benefit. Cancer arises when cells divide uncontrollably and invade other tissues or organs.
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Related Experiment Video

Updated: Feb 10, 2026

The Colon-26 Carcinoma Tumor-bearing Mouse as a Model for the Study of Cancer Cachexia
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Calcium and colon cancer.

M J Wargovich1

  • 1Department of Medical Oncology, M.D. Anderson Hospital and Tumor Institute, Houston, Texas 77030.

Journal of the American College of Nutrition
|August 1, 1988
PubMed
Summary

Dietary calcium intake may decrease colon cancer risk by regulating colon cell proliferation. Studies show calcium reduces hyperproliferation in high-risk individuals, and this research explores the underlying molecular mechanisms.

Area of Science:

  • Oncology
  • Gastroenterology
  • Cell Biology

Background:

  • Epidemiologic studies link higher dietary calcium intake to reduced colon cancer risk.
  • Calcium is hypothesized to regulate colon cell proliferation.
  • In vitro and in vivo studies confirm calcium modulates colon mucosa proliferative responses.

Purpose of the Study:

  • To investigate the molecular mechanisms by which calcium regulates colon mucosal proliferation.
  • To understand how colon tumor cells evade calcium-mediated regulation.
  • To build upon preliminary clinical findings showing oral calcium reduces hyperproliferation in high-risk patients.

Main Methods:

  • Analysis of molecular mechanisms of calcium's effect on colon cell proliferation.
  • Investigation of cellular pathways involved in calcium regulation of mucosa.

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  • Examination of how colon tumor cells bypass these regulatory mechanisms.

    • Main Results:

    • Calcium modulates colon mucosal proliferation, potentially reducing cancer risk.
    • Hyperproliferative mucosa in high-risk patients shows reduced proliferation with oral calcium.
    • Studies are exploring the specific molecular pathways and tumor cell evasion strategies.

    Conclusions:

    • Calcium plays a significant role in regulating colon cell proliferation.
    • Dietary calcium may offer a protective effect against colon cancer development.
    • Further research is needed to elucidate the precise molecular interactions and therapeutic potential.