Electrolytes Beyond Sports: Why Non-Athletes Supplement Too

Electrolytes: Not Just a Sports Drink

Many people associate electrolytes with sport — sweating, marathons, the gym. But in reality, everyone needs electrolytes daily, and several aspects of modern life can increase that need further.

Let us look at why a growing number of ordinary people (not athletes) are paying attention to electrolytes.

Modern Diet: Out of Balance

Processed food, which dominates modern diets, creates a dangerous imbalance:

Too Much Sodium, Too Little of Everything Else

Processed food is high in sodium (added salt) but low in potassium and magnesium. Fresh fruits and vegetables, nuts and seeds — the main sources of potassium and magnesium — are foods many people eat too little of.

5 Reasons Non-Athletes Need Electrolytes

1. Coffee and Caffeine

Coffee is one of the most popular drinks in Estonia. Caffeine is a mild diuretic — it increases urine production and with it the excretion of electrolytes.

While moderate coffee consumption (3–4 cups) has a small diuretic effect, it can matter for people who drink more coffee and little water.

2. Alcohol

Alcohol is a stronger diuretic than caffeine. Even moderate amounts of alcohol significantly increase fluid loss and electrolyte excretion. The classic "hangover" is largely dehydration and electrolyte deficiency.

3. Stress

Chronic stress raises cortisol levels, which in turn affects kidney function and electrolyte balance (Rude, 2010). Long-term stress may increase magnesium excretion through urine.

4. Keto and Low-Carb Diets

Low-carbohydrate diets are popular, but they have an important side effect: "keto flu."

What actually happens:

• Reducing carbohydrates lowers insulin levels
• Low insulin signals the kidneys to excrete more sodium
• With sodium excretion, the body also loses water and other electrolytes
• Symptoms develop: headache, fatigue, muscle cramps, dizziness

The solution is simple: add more electrolytes (especially sodium) to your diet. Most "keto flu" symptoms are actually electrolyte deficiency symptoms.

5. Older Adults

Older adults are more vulnerable to dehydration:

• The thirst mechanism weakens with age
• Kidney concentrating ability decreases
• Some medications (diuretics, blood pressure drugs) increase electrolyte loss
• Reduced food intake may mean fewer electrolytes from diet

EFSA-Approved Claims

The European Food Safety Authority (EFSA) has approved several health claims related to electrolytes:

• "Potassium contributes to normal muscle function" — 300 mg potassium per day
• "Magnesium contributes to electrolyte balance" — 300 mg magnesium per day
• "Magnesium contributes to normal muscle function" — 300 mg magnesium per day
• "Magnesium contributes to normal functioning of the nervous system" — 300 mg magnesium per day
• "Magnesium contributes to the reduction of tiredness and fatigue" — 300 mg magnesium per day

These are EFSA-approved claims applicable to food supplements and foods.

Practical Everyday Guide

Electrolytes From Food

Potassium-rich foods:

• Bananas, avocados, sweet potatoes
• Spinach, broccoli
• Legumes
• Nuts and seeds

Magnesium-rich foods:

• Dark chocolate (70%+)
• Pumpkin seeds
• Almonds
• Spinach
• Whole grains

When to Consider Electrolyte Supplements?

• If you drink a lot of coffee (4+ cups daily)
• On a low-carbohydrate diet
• During illness (especially diarrhoea and vomiting)
• In hot weather, even without exercise
• Older adults, especially those on medication

Summary

Electrolytes are foundational to the body's daily function, not merely a sports supplement. Modern diets, coffee consumption, stress and popular diets can increase electrolyte needs even in people who do not train actively.

References

• EFSA Panel on Dietetic Products, Nutrition and Allergies (2010). Scientific Opinion on the substantiation of health claims related to potassium and magnesium. EFSA Journal, 8(2), 1469.
• Rude, R.K. (2010). Magnesium. In: Coates, P.M. et al. (eds), Encyclopedia of Dietary Supplements. 2nd ed. Informa Healthcare, pp. 527–537.
• Maughan, R.J. (2003). Impact of mild dehydration on wellness and on exercise performance. European Journal of Clinical Nutrition, 57(S2), S19–S23.

Read more:

• Electrolyte products at MaxFit
• Magnesium products

Disclaimer

Dietary supplements are not a substitute for a varied, balanced diet and healthy lifestyle.