Water: are you drinking enough this summer?

Two liters water a day, fact or myth?

With summer temperatures reaching record highs across Europe, staying hydrated is more important than ever. But how much water do we actually need?

Most of us have heard the advice: drink eight glasses of water a day.

It sounds simple. Yet when researchers looked into the scientific evidence behind this recommendation, they found surprisingly little proof that one fixed amount is right for everyone.

Water: your body’s most important nutrient

You can survive weeks without food, but only a few days without water.

Water plays a role in almost every process in the body. It helps regulate body temperature, transport nutrients and oxygen, lubricate joints, support brain function and remove waste products.

In fact, the human brain consists of approximately 75% water. Even mild dehydration can affect concentration, energy levels and mental clarity.

Do we really need Eight glasses a day?

The truth is that there is no universal number that works for everyone.

Your daily water needs depend on many factors, including:

• Temperature and climate
• Physical activity
• Body size
• Diet
• Age
• Overall health

Someone hiking in the Algarve on a hot summer day will naturally require more water than someone spending the day indoors.

Trust your body

One of the most interesting insights from recent research is that our bodies already have a built-in mechanism to tell us when we need water: thirst.

Think about it this way.

You don’t force yourself to eat large meals when you’re not hungry. So why would you force yourself to drink large amounts of water when your body isn’t asking for it?

For most healthy people, thirst is a remarkably intelligent and reliable signal.

Rather than obsessing over a specific number of glasses per day, it may be more useful to pay attention to your body’s own feedback system.

Signs you may need more water

Besides thirst, your body gives other clues that you may need to hydrate:

• Dry mouth
• Headaches
• Fatigue
• Dizziness
• Difficulty concentrating
• Dark-coloured urine

These signals can help you determine your individual hydration needs far better than a generic rule.

Summer hydration tips

During hot weather, your body loses more fluids through sweating. To stay well hydrated:

• Carry water with you throughout the day.
• Drink before, during and after exercise.
• Eat water-rich foods such as watermelon, cucumber and oranges.
• Limit excessive alcohol consumption, especially during hot days.

The bottom line

Perhaps the biggest lesson is that hydration is not about following a rigid rule.

The famous “eight glasses a day” recommendation may be too simplistic for something as individual as human biology.

Instead of focusing on a fixed number, learn to listen to your body. Thirst, energy levels, activity and the weather all play a role in determining how much water you need.

Your body is often wiser than you think.

Sources

Based on research and insights compiled by:

Ir. ing. Mohammed Boulahrir
Orthomolecular Therapist & Clinical Psycho-Neuro-Immunologist
Power Academy
www.poweracademy.nl

Additional references:

• European Food Safety Authority (EFSA)
• World Health Organization (WHO)