Feeling dehydrated and tired all the time often stems from not drinking enough water, exacerbated by poor sleep, stress, diet, and underlying issues like anemia or thyroid problems, leading to reduced blood flow, nutrient delivery, and cellular function, so it's crucial to increase water intake, improve sleep, manage stress, and see a doctor if fatigue persists despite these changes.
If you're downing glass after glass of water but still feel thirsty, your body's electrolyte balance may be off. Sodium, potassium, magnesium, and calcium are among the electrolytes your body needs to maintain fluid retention, smooth muscle action, and regulate nerve function.
It occurs when you lose more fluids than you take in. Dehydration may happen on a particularly hot day if you sweat a lot, or if you're sick with fever, diarrhea or vomiting. It can also occur if don't drink enough water, or if you're taking a medication that increases your pee (urine) output.
Five key signs of dehydration include thirst, dark/less urine, dry mouth, headache, and dizziness/lightheadedness, signaling your body needs fluids, with reduced urination and darker urine being key indicators you aren't getting enough water. Other signs include tiredness, fatigue, cool extremities, and in infants, fewer tears when crying or sunken eyes.
Dehydration is a deficiency of water in the body. Vomiting, diarrhea, excessive sweating, burns, kidney failure, and use of diuretics may cause dehydration. People feel thirsty, and as dehydration worsens, they may sweat less and excrete less urine.
Certain disorders such as diabetes mellitus, arginine vasopressin deficiency, and Addison disease can increase the excretion of urine and thereby lead to dehydration.
5 Signs of an Electrolyte Imbalance
Is it dehydration or something else?
The fastest way to cure dehydration depends on severity: for mild cases, drink water and oral rehydration solutions (ORS) with electrolytes; for moderate cases (vomiting/diarrhea), ORS or diluted sports drinks are best; and for severe dehydration, immediate medical attention (IV fluids) at a hospital is crucial for rapid fluid and electrolyte replacement. Sip fluids slowly, especially if vomiting, to allow absorption and prevent further fluid loss.
Medicines that make dehydration more likely are:
Deficiencies. Anemia and other vitamin deficiencies (such as vitamin D or vitamin B12) are often responsible for fatigue. Dehydration can cause fatigue because the body needs plenty of fluids to function.
The four Ps are problem solving, planning, prioritising and pacing. The aim is to think of the four Ps at the beginning of each day or week to help you manage your energy levels.
The body may lose too much fluid due to diarrhea, vomiting, severe blood loss, or high fever. Lack of a hormone called antidiuretic hormone (ADH) can cause the kidneys to get rid of too much fluid. This results in extreme thirst, dehydration, and chemical imbalance of the blood.
When you are stressed, your heart rate can become elevated and you may breathe heavier, actually causing you to lose more fluids. Stress and dehydration is like the chicken and the egg—stress can cause dehydration and dehydration can cause stress.
9 healthy and hydrating alternatives to water
Symptoms of dehydration
Research shows that milk is one of the best beverages for hydration, even better than water or sports drinks.
Crucial labs for assessing dehydration include:
Celiac disease can cause dehydration due to diarrhea and nutrient malabsorption. Sjögren's disease can lead to dehydration by affecting moisture-producing glands in the body. Ulcerative colitis can cause dehydration from frequent diarrhea and trouble absorbing water and electrolytes.
What is Silent Dehydration? When your body slowly loses fluids and electrolytes without visible signs of dehydration, such as excessive thirst, dry lips, or dryness in the mouth, it's an indication of silent dehydration which is non-diarrheal in nature.
You can test for dehydration at home with the skin turgor test (pinching skin on your hand or abdomen; slow return means dehydration) or by checking urine color (darker means more dehydrated) and observing for other signs like a dry mouth, fatigue, or lack of tears in children. While simple, these methods aren't always precise, especially in older adults, so see a doctor for severe symptoms like skin tenting or persistent vomiting.
What are electrolyte imbalance symptoms?
The kidney is a principally responsible organ for retention and excretion of electrolytes and fluid in healthy individuals.
Low potassium (hypokalemia) symptoms range from mild to severe, often including muscle weakness, cramps, fatigue, and constipation, but can escalate to serious issues like abnormal heart rhythms (arrhythmias), lightheadedness, and even paralysis in severe cases, with some people experiencing no symptoms at all. Other signs can involve heart palpitations, increased thirst/urination, and abdominal discomfort.