The Importance of Electrolytes: Small Minerals, Big Impact
The Tigerlily Team
Water is essential to life, but staying hydrated involves more than simply drinking enough of it. Our bodies also depend on electrolytes—essential minerals that help regulate many of the functions that keep us healthy.
Electrolytes include sodium, potassium, magnesium, calcium, and chloride. These minerals carry electrical charges that help our cells communicate and our bodies function properly [1,2]. Sodium is the main electrolyte in the fluid outside our cells, and potassium is the main one inside our cells [3]. Together, they play important roles in:
- Hydration: Maintaining the balance of fluids inside and outside our cells.
- Muscle function: Supporting muscle contraction and relaxation, including the heartbeat.
- Nerve function: Helping transmit signals between the brain and body.
- Blood pressure: Supporting healthy fluid balance and blood pressure regulation.
- Energy and movement: Helping muscles and nerves work efficiently during everyday activities [1,2,3].
We naturally lose electrolytes through sweat and other bodily fluids. Sweat losses rise substantially during hot weather, prolonged physical activity, or illness [4,5]. Replenishing fluids and electrolytes when needed helps maintain the body’s natural balance—but more is not always better (see below).
Getting what you need from food. For most people, a balanced diet—not supplements or sports drinks—supplies the electrolytes the body needs. Fruits, vegetables, dairy, nuts, and whole grains are good sources of potassium, magnesium, and calcium [6,7]. In fact, the bigger challenge for most adults is getting enough potassium and magnesium rather than sodium: roughly 60% of U.S. adults fall short on magnesium, and most adults consume less potassium than recommended (about 3,400 mg/day for men and 2,600 mg/day for women) [7,8,9].
A note on sodium. Most people in the United States already consume more sodium than the recommended limit of about 2,300 mg per day [7,9]. So for the average person, “replenishing electrolytes” does not mean adding more salt—it mainly means eating a varied, mineral-rich diet.
When are electrolyte drinks helpful? For everyday activity and exercise lasting under an hour, plain water is usually all you need [4,10]. Electrolyte-containing beverages are most useful during prolonged exercise (generally longer than an hour), in hot conditions with heavy sweating, or during illnesses that cause fluid loss such as vomiting or diarrhea [4,10,11].
Can you drink too much? Yes. During prolonged, intense exercise such as marathons, drinking very large amounts of plain water can dangerously dilute the body’s sodium—a condition called exercise-associated hyponatremia that can cause confusion, seizures, and, rarely, death [4,10]. The practical message: drink to satisfy thirst rather than forcing large volumes of fluid, and include some sodium during long endurance efforts.
Hydration is a small daily habit that can have a meaningful impact on overall well-being. Paying attention to our bodies, drinking water regularly, and eating a balanced diet are simple ways to support lifelong health.
We want to extend a heartfelt thank you to waterdrop at Mall of America in Minnesota, for generously donating hydration products to several of our community events. We’re grateful for their kindness and commitment to supporting community well-being.
References
- Menni C, McCallum L, Pietzner M, et al. Metabolomic profiling identifies novel associations with electrolyte and acid-base homeostatic patterns. Sci Rep.
- Chekol Tassew W, Ferede YA, Zeleke AM. Major electrolyte disorder and associated factors among patients with chronic disease in Ethiopia: a systematic review and meta-analysis. BMC Nephrol.
- Jain A. Body fluid composition. Pediatr Rev.
- Thomas DT, Erdman KA, Burke LM. American College of Sports Medicine joint position statement. Nutrition and athletic performance. Med Sci Sports Exerc.
- Naderi A, Rothschild JA, Santos HO, et al. Nutritional strategies to improve post-exercise recovery and subsequent exercise performance: a narrative review. Sports Med.
- Moissl AP, Delgado GE, Kleber ME, et al. Associations between serum mineral concentrations and mortality by renal function in the Ludwigshafen Risk and Cardiovascular Health Study. Sci Rep.
- Woodruff RC, Zhao L, Ahuja JKC, et al. Top food category contributors to sodium and potassium intake—United States, 2015-2016. MMWR Morb Mortal Wkly Rep.
- Li G, Wang L, Qian Q. Electrolyte disorders. In: Evidence-Based Nephrology. 2nd ed. 2022.
- Heymsfield SB, Shapses SA. Guidance on energy and macronutrients across the life span. N Engl J Med.
- O’Connor FG, DeGroot DW. Heat-related illness in athletes. 2024.
- Eifling KP, Gaudio FG, Dumke C, et al. Wilderness Medical Society clinical practice guidelines for the prevention and treatment of heat illness: 2024 update. Wilderness Environ Med.




