DRINKELECT
Electrolytes – the body’s fluid balance, deficiency symptoms, and when supplements are needed
What are electrolytes, and why are they important?
Electrolytes are minerals that carry an electrical charge when dissolved in the body’s fluids. They help regulate fluid balance, send nerve signals, and control muscle contractions—basically the body’s electrical language. The most important electrolytes are sodium, potassium, and magnesium, but calcium, chloride, and bicarbonate also play crucial roles. Key electrolytes therefore include sodium, potassium, magnesium, calcium, and chloride.
These minerals are naturally found in blood, sweat, and urine, as well as in the food we eat and the water we drink. Electrolytes are essential for muscle contractions and the nervous system—without them, not a single muscle fiber can contract in a controlled way, and no signals travel along the nerve pathways.
Electrolytes regulate the body’s fluid balance by controlling how much fluid is in and around the cells. Both electrolyte deficiency and excess can cause symptoms such as fatigue, cramps, and heart rhythm disturbances, but this text focuses on the milder imbalances many people experience in everyday life.
Why does this matter for training, heat, and recovery? Because the body loses electrolytes through sweating—and it affects more than you might think.
Electrolytes and the body’s fluid balance
The body is made up of about 60% water. Electrolytes act like controls for how that fluid is distributed between cells, blood, and tissues. Electrolytes are important for regulating the body’s fluid balance, and without them the body loses control of its fluid distribution.
The sodium–potassium balance is especially central: sodium controls fluid outside the cells, while potassium dominates inside. This distribution is maintained by the body’s Na⁺/K⁺ pump and hormone system. Electrolytes help regulate fluid balance by ensuring the right amount of fluid is in the right place.
Common situations that disrupt the balance
- Summer heat and warm weather in Sweden
- Intense training or sauna
- Long office days with too little fluid
- Stomach bug and diarrhea
The body loses electrolytes through sweating—sodium concentration in sweat can range between 460 and 1,840 mg per liter. The need for electrolytes increases in hot weather, and water alone isn’t always enough. Drinking only water without salts can dilute electrolytes and cause nausea, fatigue, or dizziness even if you’ve had enough to drink.
The body’s fluid balance affects energy, focus, skin, pulse, and blood pressure. Mild dehydration often causes headaches and fatigue, while severe dehydration with confusion or heart palpitations requires medical care. Electrolytes help the body stay balanced—but what happens when they’re not enough?
Symptoms of electrolyte deficiency
Electrolyte deficiency is often noticed only once the body’s balance is already affected, especially after sweating, a stomach bug, or prolonged stress. Deficiencies can cause symptoms such as fatigue, dizziness, and muscle cramps.
Common mild symptoms to watch for:
Different mineral deficiencies feel different. Sodium deficiency after extreme sweating often causes nausea and weakness, while magnesium deficiency from a one-sided diet may show up as muscle twitches and disrupted sleep. Confusion can occur with electrolyte imbalance if it becomes pronounced enough.
People who train a lot, follow LCHF/keto, or fast intermittently may notice symptoms sooner if they don’t top up electrolytes. Low-carb diets affect insulin levels and can make deficiency more pronounced. Electrolytes can reduce the risk of muscle cramps if levels are kept stable, and electrolytes help prevent muscle cramps by supporting muscle function and nerve signals.
Pay attention to early signals. Severe symptoms such as significant confusion, chest pain, or prolonged heart rhythm disturbances should always lead to contacting healthcare via 1177 or your local health center.
A practical example: you wake up with a mild headache and stiffness after a sweaty night. A glass of water with a pinch of salt and a little lemon can bring noticeable improvement within an hour.
Top up what you lose
Our electrolytes
When do you need electrolyte supplements—and how does electrolyte powder work?
Electrolyte supplements can be relevant for hard training, endurance sessions, hot summer days, stomach bugs, and dietary approaches like fasting or keto. During intense training, electrolyte supplements can be beneficial, and electrolyte supplements are useful during intense training to maintain performance and reduce the risk of cramps.
Electrolyte powder is a blend of minerals—often sodium, potassium, magnesium, and sometimes calcium—mixed into water for fast rehydration. Electrolyte powder is easy to mix with water, and electrolyte powder can be mixed with water for rehydration right in your gym bag or while traveling. Electrolyte supplements help restore fluid balance quickly after activity.
If you’re looking for sugar-free products with natural flavors, we offer them—in a blend with sodium, magnesium, and vitamin C that suits anyone who wants to avoid unnecessary additives. The product comes in flavors like lemon, and starts at SEK 499. Electrolyte supplements can reduce the risk of muscle cramps and help restore balance after sweating.
How is it different from sports drinks? Sports drinks often contain sugar for energy, while electrolyte powder focuses on mineral content. Classic oral rehydration solutions for illness have a stricter composition for optimal absorption.
An important note: most people with a normal diet don’t need high doses every day. Follow the recommended dosage and buy products with a clear ingredient list. Use electrolyte supplements as a tool in specific situations, not as a replacement for food, and contact healthcare if symptoms are persistent or severe. Electrolytes are important during intense training—but they never replace a well-thought-out diet.
Electrolytes in food – how to get them naturally
The body should primarily get electrolytes through your diet. Many foods are naturally rich in these minerals, and a balanced diet is usually enough to cover your electrolyte needs.
| Mineral | Good sources |
|---|---|
| Sodium | Table salt, salted nuts, salty foods |
| Potassium | Bananas, potatoes, avocado |
| Magnesium | Cocoa, nuts, seeds, spinach |
| Calcium | Dairy products, fortified plant-based drinks, leafy greens |
Electrolytes are found in foods like bananas and spinach, and natural sources of electrolytes include salty foods. Coconut water is also a natural source of electrolytes that works well after training. Electrolytes are naturally found in water-rich foods like fruit, berries, and vegetables—a colorful plate often provides a solid base.
Simple everyday choices: salt your food in moderation, add a banana after a workout, make a smoothie with spinach, lime, and berries. A varied diet in line with Swedish nutrition recommendations usually covers your needs, but a lifestyle with lots of training, sauna, or travel to hot climates can increase them. Supplements should be seen as a complement to—not a replacement for—a balanced diet.
