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Related Concept Videos

Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

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.
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Synthesis and Functions of Calcitonin00:51

Synthesis and Functions of Calcitonin

Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
Feedback Regulation of Calcium Concentration01:27

Feedback Regulation of Calcium Concentration

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.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Regulation of Food Intake01:30

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...

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Related Experiment Video

Updated: Jul 7, 2026

Segmentation and Measurement of Fat Volumes in Murine Obesity Models Using X-ray Computed Tomography
13:09

Segmentation and Measurement of Fat Volumes in Murine Obesity Models Using X-ray Computed Tomography

Published on: April 4, 2012

Recent developments in calcium-related obesity research.

G C Major1, J-P Chaput, M Ledoux

  • 1Division of Kinesiology, Department of Social and Preventive Medicine, Faculty of Medicine, Laval University, Quebec City, Quebec, Canada.

Obesity Reviews : an Official Journal of the International Association for the Study of Obesity
|February 20, 2008
PubMed
Summary
This summary is machine-generated.

Calcium and dairy intake influence energy balance and body composition. Inadequate intake may increase obesity and metabolic syndrome risk, highlighting their importance for health.

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Area of Science:

  • Nutritional Science
  • Metabolic Health
  • Obesity Research

Background:

  • Growing scientific interest in calcium and dairy's role in energy balance.
  • Existing literature suggests a link between calcium/dairy intake and body weight regulation.

Purpose of the Study:

  • To comprehensively document the role of calcium and dairy in energy balance and body composition.
  • To present expert insights and recent developments in calcium-related obesity research.

Main Methods:

  • Synthesis of expert presentations from a symposium on calcium and obesity.
  • Organization of information into 13 proposition statements.
  • Integration of recent research on calcium and obesity.

Main Results:

  • Calcium and dairy consumption affect body weight, adiposity, and appetite.
  • Intake influences weight loss intervention outcomes and lipid-lipoprotein profiles.
  • Potential impact on metabolic syndrome risk and associated metabolic mechanisms.

Conclusions:

  • Calcium and dairy intake significantly influence multiple aspects of energy and fat balance.
  • Insufficient calcium and dairy consumption may elevate the risk of positive energy balance.
  • Inadequate intake is linked to increased risk for obesity and other health issues.