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
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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

6

This is a great reminder that hydration isn’t the same for everyone. Children, older adults, and pregnant women have different needs, so understanding individual requirements is just as important as encouraging people to drink more water.