Dehydration

Dehydration is a condition caused by the loss of too much water from the body. Severe diarrhea or vomiting can cause dehydration.

What is Dehydration?

Dehydration is a condition that results when the body loses more water than it takes in.

Dehydration Signs and Symptoms in Children

Dehydration in the Elderly: Signs and Symptoms

How Does Mild Dehydration Affect the Body?

Latest Dehydration News and Research

Noise-canceling headphones reduce nausea and vomiting after surgery

Patients who wore noise-canceling headphones during minimally invasive gynecologic surgery were significantly less likely to experience postoperative nausea and vomiting (PONV), suggest findings from a randomized clinical trial presented at the ANESTHESIOLOGY® 2026 annual meeting.

19 Oct 2026

Losing weight is one thing. Keeping your muscle is another, experts say

The International Society of Sports Nutrition (ISSN) position stand concludes that sustained calorie restriction drives weight loss, while adequate protein intake and resistance training help preserve lean mass. Reviewing intermittent fasting, ketogenic diets, and other dietary approaches, the authors emphasize individualized nutrition plans, body composition, and sustainable weight management rather than rapid weight loss alone.

14 Oct 2026

Extreme heat threatens maternal health and newborn wellbeing worldwide

Extreme heat has led to a marked increase in the risks faced by pregnant women and their babies, according to a survey of 1,000 healthcare professionals in countries including Brazil, India and Zimbabwe.

11 Oct 2026

A trick from tardigrades could help human blood withstand freezing

Tardigrades, also called water bears, are famous for their ability to survive nearly anything. They protect themselves in extreme environments using proteins that researchers have developed into an efficient and effective strategy to preserve human red blood cells.

10 Oct 2026

Routine blood test may offer clues to future dementia risk

A common blood test already carried out during routine health checks may contain clues about a person's long-term risk of dementia, according to research being presented at the ECNP Congress in Munich and recently published in the Journal of Alzheimer's Disease.

9 Oct 2026

Skipping water during exercise may limit your body's response to whey protein

Hydration status may influence post-exercise amino acid availability, although effects on muscle recovery remain uncertain.

8 Oct 2026

Why is dengue spreading while malaria has declined?

Rising temperatures are reshaping malaria and dengue dynamics, revealing contrasting trends driven by urbanization, disease control, and socioeconomic factors.

8 Oct 2026

Weekly cisplatin fails to reduce acute toxicity in advanced head and neck cancer

Physicians typically use either a higher dose of cisplatin given every three weeks or a lower dose given weekly in combination with radiation to treat locally advanced head and neck cancer.

29 Sep 2026

What happens to blood pressure during extreme heat? A 4.2 million-visit study offers a clue

In a cross-sectional analysis of more than 4.2 million summer outpatient encounters across US community health centers, same-day extreme heat was associated with small reductions in systolic and diastolic blood pressure, with somewhat larger differences among adults aged 65 years or older. The changes were unlikely to be clinically meaningful for most individuals, suggesting that acute blood pressure shifts may account for little of the cardiovascular risk associated with extreme heat.

14 Sep 2026

Shade and protective clothing best protect young babies from the sun

When you go outdoors with your infant, whether for a quick stroll in the park or a day at the beach, it's important to keep your little one out of the sun. But should you put sunscreen on your baby to protect them from the sun's bright rays? Not usually.

10 Sep 2026

Study reveals how SGLT2 inhibitors improve failing heart function

Researchers have discovered that SGLT2 inhibitors, a class of drugs originally developed to treat diabetes and now widely used for heart failure, work by activating a key enzyme that helps heart cells produce and use energy more efficiently.

27 Aug 2026

Extreme heat exposure triggers broad range of medical emergencies

When temperatures spike, emergency physicians expect to see more cases of dehydration and heat stroke.

27 Aug 2026

Children bear the greatest burden of climate-driven heat exposure

New research by Vrije Universiteit Brussel (VUB) shows that globally up to 560 million children aged 0 to 9 years old (43% of all children in this age group) are living through at least one additional month (30 or more days) of heat stress per year due to human-induced climate change.

26 Aug 2026

Exposure to drought during pregnancy associated with higher risk of preterm birth

Climate change is making droughts more frequent, prolonged, and intense in many regions of the world, increasing the need to understand their effects on health.

25 Aug 2026

Why keto appears to lower blood pressure for some people but not others

A narrative review finds that ketogenic diets may modestly lower blood pressure through weight loss, reduced visceral fat, improved insulin sensitivity, fluid and electrolyte shifts, and anti-inflammatory effects. However, effects vary across studies, long-term cardiovascular evidence remains limited, and diet quality, hydration, electrolyte balance, and medication monitoring are important.

17 Aug 2026

Review outlines effective approaches to reduce recurrent hepatic encephalopathy

Hepatic encephalopathy (HE) is a neurologic complication of advanced liver disease, causing impaired functioning, reduced quality of life (QOL), and increased hospitalisation and mortality.

31 Jul 2026

Two microscopic parasites cause widespread diarrheal illness across America

You've seen the alarming headlines about parasites causing "explosive diarrhea" across the U.S. Two microscopic parasites – cyclospora cayetanensis and cryptosporidium – can both cause prolonged gastrointestinal illness, including watery diarrhea, stomach cramps, and dehydration.

24 Jul 2026

Smart travel habits reduce discomfort from chronic back pain

As the travel season hits its peak, millions are preparing to spend hours on planes, trains, and in cars.

8 Jul 2026

Nerve stimulation methods provide safe relief for oropharyngeal dysphagia

Dysphagia, a severe comorbidity of many neurological diseases, often lacks targeted therapies. This critical review assessed the clinical effectiveness and safety of electrical stimulation of cranial nerves for treating dysphagia, including implantable (direct nerve stimulation), minimally invasive (pharyngeal electrical stimulation, PES), and non‑invasive (transcutaneous) approaches.

30 Jun 2026

Researchers map structural changes of viruses during the dehydration process

Abhishek Mall from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg (MPSD) and his colleagues explored the structural dynamics of the protein shells - called capsids - that enclose the genetic material of viruses.

30 Jun 2026