Stay Hydrated This Summer: Who’s Most at Risk and What to Do

General
1

Water is an essential element of the human body. An adequate amount is necessary for proper functioning. Dehydration is a commonly seen condition in summer. It is a physiological challenge seen in warm-climate environments.

It is a complex condition mainly involving disturbance in the fluid compartment, osmotic balance, and cardiovascular homeostasis.

Who is more vulnerable to summer dehydration?

Children :

  1. Higher metabolic rate

  2. Higher surface-area-to-volume ratio

  3. Immature thermoregulation

  4. Poor thirst recognition

  5. Activity engagement

Protection strategy: Offer water every 20–30 minutes during outdoor activities, not just when children ask.

Older Adults

Aging changes hydration needs and recognition:

  • Decreased thirst sensation

  • Reduced kidney function

  • Diuretics, antidepressants, and other medications increase fluid loss

  • May not access water easily due to physical limitations

  • Diabetes, heart disease, kidney disease complicate hydration

  • **Cognitive decline-**May forget to drink water

Protection strategy: Set regular drinking schedules (every hour) rather than relying on thirst. Monitor urine color as indicator.

Pregnant and Breastfeeding Women

Pregnancy and lactation increase fluid needs:

  • Expanded blood volume

  • Increased metabolism

  • **Breastfeeding-**Lactation requires significant fluid; nursing mothers lose fluid through milk production

Protection strategy: Increase baseline water intake by 25–30%; drink water before, during, and after nursing.

How Much Water Do You Actually Need?

The common “8 glasses a day” rule is oversimplified. Actual needs vary based on:

  • Formula: Body weight (pounds) ÷ 2 = ounces of water per day

  • Adjustments for summer:

    • Add 12–16 oz (355–475 mL) for each hour of outdoor activity in moderate heat

    • Add 20–24 oz (590–710 mL) for each hour of vigorous activity or high heat

    • Add 16–24 oz (475–710 mL) if consuming alcohol or caffeine

  • Urine color check: Pale yellow indicates adequate hydration; dark yellow/amber indicates dehydration.

Knowing your body’s needs is important. An imbalance in fluid level can lead to major complications.

Share your thoughts on how you keep your body hydrated.

MBH/PS

1 Like
2

Good information!

3

Absolutely correct fluids are more important than food.

4

Very informative and very well summarised. Hydration needs are much more personalised than we think.

5

A practical guide to beat the summer heat and dehydration. Thanks for sharing