Electrolytes at High Altitude: Why Hydration Changes Above 7,500 Feet (and What to Do in Colorado)

Colorado Mountains

High altitude (7,500 feet and above) changes hydration. Many people try to fix altitude fatigue or headaches by drinking more water, but at elevation, electrolytes matter just as much as fluids.

If you live in the mountains or you’re visiting Colorado, a simple electrolyte routine can help you feel better during hiking, skiing, yoga, strength training, or running.

Why hydration feels different at altitude

1. You lose more water through breathing High-altitude air is usually drier. You lose more water each time you exhale, even at rest.

2. You may urinate more (altitude diuresis)At altitude, your body can excrete more fluid and sodium. This can contribute to headaches, fatigue, and feeling “off.”

3. Sodium needs are often higher Sodium helps you hold onto fluid, supports blood volume, and helps with nerve and muscle function. Drinking only plain water can sometimes leave you feeling bloated but still thirsty.

Signs you may need electrolytes (not just water)

1. Fatigue Headaches Dizziness or lightheadedness Muscle cramps or tightness Poor sleep Feeling dehydrated even though you’re drinking water

2. Simple electrolyte plan for high altitude

3. Daily baseline (above 7,500 feet) Add 1 serving (or 1/2 teaspoon of your mix) to 16–24 ounces of water once per day.

4. Workout, hiking, or ski days1 serving before activity, 1 serving after longer activity or time outdoors

Tip: If water makes you feel bloated or you’re still thirsty, electrolytes are often the missing piece.

A clean, sugar-free electrolyte option

Many electrolyte drinks contain sugar or additives. I prefer a simple, sugar-free mix you can adjust for altitude and activity.

Want the DIY recipe?👉 DIY Electrolyte Powder (LMNT Dupe)

When to be cautious

• If you have kidney disease, heart failure, uncontrolled high blood pressure, or take diuretics, talk with your clinician before increasing electrolytes.

Final thoughts

At altitude, hydration isn’t only about drinking more water. It’s about fluid plus electrolytes. A simple daily electrolyte habit can improve energy, reduce headaches, and support better workouts and recovery.