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Related Concept Videos

Disorder of Water Balance01:29

Disorder of Water Balance

Water balance disorders are medical conditions that occur when there is a deviation from the body's water volume or osmolarity, disrupting normal homeostasis and leading todehydration, hypotonic hydration, hyperhydration, edema, or water intoxication.
Dehydration
Dehydration occurs when the body loses fluids (particularly water).
Causes:
The major causes of dehydration include excessive sweating, fever, vomiting, diarrhea, and diuresis.
Signs and Symptoms:
Symptoms primarily include intense...
Regulation of Water Intake01:25

Regulation of Water Intake

Osmolality refers to the number of solute particles per kilogram of solvent in a solution. Plasma osmolality specifically indicates the total number of solute particles per kilogram of water in blood plasma. This value reflects the body's hydration status and is tightly regulated through mechanisms controlling water intake and output. While water consumption is a conscious decision, the body has intrinsic regulatory systems to maintain fluid balance. Dehydration, a state of water deficit...
Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
Primary Motives: Hunger and Thirst01:25

Primary Motives: Hunger and Thirst

Hunger and thirst are fundamental physiological drives crucial for maintaining homeostasis and ensuring the survival of both humans and animals. These drives are regulated through complex interactions between the brain, hormones, and sensory receptors.
Hunger arises when the brain detects changes in the body's nutrient levels, including glucose, lipids, amino acids, and hormones such as ghrelin and leptin. The hypothalamus plays a central role in hunger regulation. The lateral hypothalamus acts...
Tonicity in Animals01:16

Tonicity in Animals

Tonicity describes the amount of solute in a solution. The measure of the tonicity of a solution, or the total amount of solutes dissolved in a specific amount of solution, is called its osmolarity. Three terms—hypotonic, isotonic, and hypertonic—are used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells. In a hypotonic solution, such as tap water, the extracellular fluid has a lower concentration of solutes than the fluid inside the cell,...
Tonicity in Animals00:59

Tonicity in Animals

The tonicity of a solution determines if a cell gains or loses water in that solution. The tonicity depends on the permeability of the cell membrane for different solutes and the concentration of nonpenetrating solutes in the solution within and outside of the cell. If a semipermeable membrane hinders the passage of some solutes but allows water to follow its concentration gradient, water moves from the side with low osmolarity (i.e., less solute) to the side with higher osmolarity (i.e.,...

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Water balance throughout the adult life span in a German population.

The British journal of nutrition·2011
Same author

Long-term high urinary potential renal acid load and low nitrogen excretion predict reduced diaphyseal bone mass and bone size in children.

The Journal of clinical endocrinology and metabolism·2011
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Prepubertal healthy children's urinary androstenediol predicts diaphyseal bone strength in late puberty.

The Journal of clinical endocrinology and metabolism·2008
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Food composition and acid-base balance: alimentary alkali depletion and acid load in herbivores.

The Journal of nutrition·2008
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Hydration in children.

Journal of the American College of Nutrition·2007
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Food mineral composition and acid-base balance in preterm infants.

European journal of nutrition·2007

Related Experiment Video

Updated: Jul 11, 2026

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test
10:21

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test

Published on: September 22, 2023

Hydration and disease.

Friedrich Manz1

  • 1Research Institute of Child Nutrition, Heinstück 11, D-44225 Dortmund, Germany. fr.manz@t-online.de

Journal of the American College of Nutrition
|October 27, 2007
PubMed
Summary

Maintaining good hydration is crucial for preventing numerous diseases, from kidney stones to heart disease. However, excessive fluid intake may harm certain patients, highlighting the importance of balanced hydration status.

Area of Science:

  • Medical Science
  • Pathophysiology
  • Preventive Medicine

Background:

  • Multifactorial diseases are common.
  • Mild dehydration is increasingly recognized as a contributing factor to various health conditions.
  • The impact of hydration status on disease development requires comprehensive review.

Purpose of the Study:

  • To review the effects of hydration status on acute and chronic diseases.
  • To categorize evidence on hydration's role in disease pathogenesis and management.
  • To exclude the acute effects of mild dehydration on exercise, cognition, and well-being.

Main Methods:

  • Systematic review of existing literature.
  • Categorization of evidence based on four tiers (I-IV).
  • Analysis of hydration's role in specific acute and chronic conditions.

More Related Videos

Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis
07:17

Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis

Published on: August 17, 2022

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients
07:44

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Published on: July 14, 2023

Related Experiment Videos

Last Updated: Jul 11, 2026

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test
10:21

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test

Published on: September 22, 2023

Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis
07:17

Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis

Published on: August 17, 2022

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients
07:44

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Published on: July 14, 2023

Main Results:

  • Good hydration positively impacts conditions like urolithiasis, urinary tract infections, constipation, hypertension, and cardiovascular diseases.
  • Mild dehydration may be pathogenic in oligohydramnios, prolonged labor, cystic fibrosis, and renal toxicity.
  • High fluid intake avoidance is indicated in cardiovascular disorders, renal failure, and cisplatin therapy due to water intoxication risk.

Conclusions:

  • Maintaining optimal hydration is vital for preventing and managing a wide range of diseases.
  • The role of hydration status is complex and condition-specific.
  • Further research is needed to clarify inconsistent findings, particularly in cancers.