Do electrolytes matter if I am dieting intensely?

Sometimes. When calories and carbohydrates drop, food volume and sodium intake may drop, too. If training, sweat, heat, or low-carb dieting are also in the picture, hydration and electrolytes may become more noticeable.

But electrolytes are not a cure for an overly aggressive diet. Fatigue, dizziness, poor training, irritability, and intense hunger may mean the deficit is too large or recovery is too poor.

If you have blood pressure issues, kidney disease, heart disease, take diuretics, or have fainting, dizziness, or concerning symptoms, get medical guidance.