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Dehydration 101

Let’s cover 10 symptoms of dehydration, 10 causes of dehydration, and 4 ways to rehydrate effectively.

 

Are You Dehydrated?

Up to 75% of people may have mild symptoms of dehydration.

“A survey conducted by New York Hospital and Cornell Medical Center found that 75% of its 3,003 subjects were experiencing net fluid loss from chronic dehydration.” 

A Canadian survey found that 63% of respondents reported feeling regularly dehydrated.

Another medical article mentions that dehydration “has been reported to occur in 17% to 28% of older adults in the United States”

Anywhere between 17-75% of people may have mild symptoms of dehydration. This is a large range and we don’t know the exact percentage, but the point is this: you might be dehydrated and not even know it.

10 Symptoms of Dehydration

Some common symptoms of dehydration include:

  1. Thirst: one of the earliest signs.
  2. Dry mouth: feeling of dryness in the mouth and throat.
  3. Dark yellow urine: urine becomes more concentrated and dark.
  4. Fatigue: feeling tired or exhausted.
  5. Dizziness or lightheadedness: especially when standing up quickly.
  6. Dry skin: skin may feel dry and less elastic.
  7. Headache: often a sign of mild to moderate dehydration.
  8. Confusion or difficulty concentrating: especially in more severe cases, and brain fog and overall grogginess in mild cases.
  9. Decreased urine output: urinating less frequently than usual.
  10. Rapid heartbeat or breathing: the body tries to compensate for the lack of fluid.

Although you may not be severely dehydrated, you may have symptoms of mild dehydration such as feeling tired and groggy throughout the day or experiencing headaches or brain fog.

So what causes dehydration?

10 Causes of Dehydration

Dehydration can be caused by various factors, often related to an imbalance between fluid intake and fluid loss. Common causes include:

1. Inadequate Fluid Intake

  • Not drinking enough water: Failing to consume enough fluids to meet the body's needs, especially in hot weather or during physical activity.
  • Dietary choices: Consuming diuretics like caffeine or alcohol, which can increase urine production and lead to fluid loss.

2. Excessive Fluid Loss

  • Sweating: Heavy sweating due to hot weather, intense physical activity, or fever can lead to significant fluid loss.
  • Vomiting and diarrhea: These can cause rapid loss of fluids and electrolytes, especially in cases of gastroenteritis or food poisoning.
  • Excessive urination: Conditions like uncontrolled diabetes (diabetes mellitus), certain medications (e.g., diuretics), or diuretic drinks can increase urine output, leading to dehydration.

3. Fever

  • A high fever can increase fluid loss through sweating and increased respiratory rate.

4. Illness or Injury

  • Burns: Severe burns can cause the skin to lose fluids.
  • Infections: Certain infections can lead to fever, sweating, vomiting, or diarrhea, all contributing to dehydration.

5. Climate

  • Hot and humid weather: High temperatures and humidity levels increase sweating and can cause rapid fluid loss.
  • Dry climates: Arid environments can also contribute to dehydration through insensible water loss (fluid loss that is not easily noticed, such as through breathing).
  • Cold climates and winter: Cold climates are deceptive because many people feel less thirsty and are unaware that they’re sweating. But they may actually be dehydrated due to physical activity, dry air, and other factors.

6. Physical Activity

  • Intense exercise: Prolonged or vigorous exercise increases fluid loss through sweating and respiration.

7. Medications

  • Diuretics: Medications that increase urine output can lead to dehydration if fluid intake isn't adequately increased.
  • Laxatives: Overuse of laxatives can cause dehydration by increasing fluid loss through the bowels.

8. Chronic Conditions

  • Diabetes: Both diabetes mellitus and diabetes insipidus can lead to increased urination, which can cause dehydration if not managed properly.
  • Kidney disease: Chronic kidney conditions can disrupt the body's fluid balance.

9. Age

  • Older adults: The sensation of thirst decreases with age, and older adults may not drink enough fluids.
  • Infants and children: They are more vulnerable to dehydration, especially during illness or in hot weather, because they have a higher water turnover (the movement and replacement of water through the body, typically over a day).

10. Breathing (Respiration)

  • Rapid breathing: Increased respiration rates can lead to fluid loss through exhalation.

So what can you do to stay refreshed and hydrated throughout the day?

4 Ways to Rehydrate Effectively

1. Drink Water

  • Water is the most straightforward and effective way to rehydrate. It’s easily absorbed and helps replenish the fluids lost through sweat, breathing, and other bodily functions.

2. Eat Water-Rich Foods

  • Foods like cucumbers, watermelon, oranges, and lettuce have high water content, providing hydration along with essential nutrients and electrolytes.

3. Avoid Dehydrating Beverages

  • Limit or avoid drinks with caffeine or alcohol, as they can increase urine output and contribute to dehydration. Instead, choose water, herbal teas, or diluted juices.

4. Consume Electrolyte-Rich Drinks

  • Electrolyte drink mixes, or coconut water provide essential electrolytes (sodium, potassium, magnesium) in higher quantities than food alone, that help balance fluids in the body and support nerve and muscle function.