電解質是人體必需的礦物質，包括鈉、鉀、鈣、鎂和氯化物，溶於體液後帶有電荷，協助肌肉與神經正常運作並維持細胞內外的液體平衡。電解質產品市場在2025年估值約390億美元，預計十年內翻倍，其增長主要受健康趨勢和網紅品牌推動，例如由YouTuber Logan Paul和KSI創立的Prime Hydration據稱一年銷售額突破十億美元。

對大多數健康成年人而言，均衡飲食和適時飲水已能滿足電解質需求。電解質補充品真正有用的情境大致有三種：持續一小時以上的高強度出汗運動、因疾病導致大量體液流失，以及長時間禁食期間缺乏食物中的礦物質來源。日常食物如水果、蔬菜、堅果、全穀物以及牛奶和椰子水等飲品，都能有效補充電解質。（關鍵數字：over an hour）

然而，過量攝取電解質產品可能適得其反。許多產品含有大量鈉，而世界衛生組織指出全球平均鈉攝取量已超過建議上限的兩倍，每年約189萬人死亡與鈉攝取過量有關；部分產品還添加大量糖分，營養價值接近汽水。對於非特殊需求的一般人來說，電解質本身不可或缺，但電解質產品大多只是一種生活方式消費選擇。

Electrolytes are essential minerals—sodium, potassium, calcium, magnesium, and chloride—that carry an electrical charge in body fluids, enabling muscle and nerve function and maintaining cellular fluid balance. The electrolyte product market is estimated at $39 billion globally in 2025 and is projected to double within a decade, driven largely by wellness trends and influencer-backed brands such as Prime Hydration, which reportedly exceeded $1 billion in sales in a single year.

For most healthy adults, a balanced diet and drinking water when thirsty already provide sufficient electrolytes. Supplementation is genuinely beneficial in roughly three scenarios: prolonged, sweat-heavy exercise lasting over an hour, illness causing significant fluid loss, and extended fasting periods when dietary mineral sources are absent. Everyday foods including fruits, vegetables, nuts, whole grains, and beverages like milk and coconut water naturally replenish electrolyte stores.

Excessive intake of electrolyte products can be counterproductive. Many contain significant sodium, even though the World Health Organization estimates that global average sodium consumption already exceeds double its recommended limit, contributing to approximately 1.89 million deaths annually. Some formulations also include substantial added sugar, making them nutritionally comparable to soft drinks. For the general population without specific recovery or endurance needs, electrolytes themselves remain essential, but electrolyte products are largely a lifestyle purchase rather than a health necessity.