电解质是人体必需的矿物质，包括钠、钾、钙、镁和氯化物，溶于体液后带有电荷，协助肌肉与神经正常运作并维持细胞内外的液体平衡。电解质产品市场在2025年估值约390亿美元，预计十年内翻倍，其增长主要受健康趋势和网红品牌推动，例如由YouTuber Logan Paul和KSI创立的Prime Hydration据称一年销售额突破十亿美元。

对大多数健康成年人而言，均衡饮食和适时饮水已能满足电解质需求。电解质补充品真正有用的情境大致有三种：持续一小时以上的高强度出汗运动、因疾病导致大量体液流失，以及长时间禁食期间缺乏食物中的矿物质来源。日常食物如水果、蔬菜、坚果、全谷物以及牛奶和椰子水等饮品，都能有效补充电解质。（关键数字：over an hour）

然而，过量摄取电解质产品可能适得其反。许多产品含有大量钠，而世界卫生组织指出全球平均钠摄取量已超过建议上限的两倍，每年约189万人死亡与钠摄取过量有关；部分产品还添加大量糖分，营养价值接近汽水。对于非特殊需求的一般人来说，电解质本身不可或缺，但电解质产品大多只是一种生活方式消费选择。

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.