Electrolytes: What They Are, Why You're Probably Deficient, and How to Fix It
Most people know they're supposed to drink more water. Fewer know that drinking too much water — without enough electrolytes — can actually work against your hydration. It's one of the more counterintuitive things we see in practice, and it comes up constantly in lab reviews.
Electrolytes aren’t just for athletes or hot yoga enthusiasts. They’re essential minerals that govern how water moves in and out of your cells, how your muscles fire, how your nerves communicate, and how your body produces and sustains energy. When they’re off — even subtly — you feel it. Fatigue, brain fog, muscle cramps, low blood pressure when you stand up, and a general sense of not quite running on full. These are the kinds of complaints that get dismissed in a 10-minute conventional appointment but show up clearly when we actually look.
Here’s what you need to know.
What Electrolytes Actually Are
Electrolytes are minerals that carry an electrical charge when dissolved in water. That charge is what allows them to move across cell membranes and trigger the reactions your body depends on — muscle contractions, nerve signals, fluid regulation, energy production, waste removal.
The main ones: sodium, potassium, magnesium, calcium, chloride, phosphate, and bicarbonate. You’re getting them — or not getting enough of them — through what you eat and drink every day.
The catch is that modern diets, filtered water, high stress, certain medications, and even intense exercise all deplete electrolytes faster than most people realize. And plain water, for all its benefits, doesn’t replenish them — it can actually dilute the ones you have.
Why They Matter More Than You Think
Your body is roughly 60% water, and electrolytes are what keep that water where it belongs — balanced between inside and outside your cells. When that balance tips, things stop working the way they should.
In practice, we often recommend electrolyte support often for:
Low sodium or magnesium levels on labs
Muscle cramps or twitching
Orthostatic hypotension (lightheadedness when standing)
Low energy, fatigue, or nausea during weight loss
Drinking large amounts of plain or filtered water daily
Trouble staying hydrated despite drinking enough
None of these are dramatic symptoms on their own. But they’re signals worth paying attention to, especially when they show up together.
A Word on Sodium — It’s Not the Villain You’ve Been Told
Sodium has taken a beating in the health conversation over the last few decades. And yes, the standard American diet — full of processed food, packaged snacks, and fast food — is too high in sodium. That part is true.
But the leap from “too much processed sodium is bad” to “all sodium is bad” has caused real problems for a lot of people eating clean, whole food diets and drinking plenty of filtered water. There’s a growing body of research showing that restricting sodium too aggressively may actually increase cardiovascular risk in some individuals — the mechanism being that when your body doesn’t get enough sodium, it compensates by spiking certain hormones to retain it. Those hormonal changes are what raise blood pressure, not the sodium itself.
Sodium is an essential nutrient. It supports fluid balance, nerve transmission, and energy levels. If you’re not eating processed food but still restricting salt, and you’re experiencing fatigue, low blood pressure, or muscle cramps, sodium deficiency may be part of the picture. When intake drops too low, the body will even begin pulling sodium from bone.
The goal isn’t maximum sodium or minimum sodium — it’s the right sodium for your body. That’s something we can actually see on your labs.
What the Numbers Look Like for Daily Support
General guidelines give us a reasonable starting point, but these are population-level averages — not prescriptions for every individual. That said, here’s what the research supports for healthy adults focused on everyday function:
Sodium: 1,500–2,300 mg/day
-The lower end supports basic physiological function. The upper end is where cardiovascular risk begins to climb for sodium-sensitive individuals. If you’re active, sweating regularly, or eating a low-processed diet, you’re probably on the lower end of actual intake — and may benefit from being more intentional about quality sodium sources like sea salt, olives, or naturally fermented foods.
Potassium: 2,600 mg/day (women) · 3,400 mg/day (men)
- Most Americans fall significantly short of this. Potassium works in partnership with sodium to regulate fluid balance and blood pressure — it’s one reason the conversation about sodium is incomplete without it. Avocados, leafy greens, sweet potatoes, and bananas are your best daily whole-food sources.
Magnesium: 310–320 mg/day (women) · 400–420 mg/day (men)
- Magnesium is involved in over 300 enzymatic reactions in your body — including sleep quality, stress response, muscle relaxation, and energy metabolism. It’s also one of the most commonly deficient minerals we see on labs. Stress depletes it. Alcohol depletes it. Filtered water removes it. And because symptoms of deficiency (fatigue, sleep issues, muscle cramps, anxiety) are so nonspecific, it often goes unrecognized for years.
Calcium: 1,000 mg/day (higher for women over 50)
- Calcium and magnesium are partners. Calcium drives muscle contraction; magnesium helps muscles relax. Getting enough of both — and in the right ratio — matters for everything from heart function to preventing cramps. Dairy, leafy greens, sardines, and fortified foods are the primary dietary sources.
When Food Isn’t Enough: Supplementation Done Right
Even people eating excellent, whole-food diets often come up short on magnesium, potassium, and sodium — especially if they’re active or drinking a lot of plain water throughout the day. This is why we recommend electrolyte supplementation for almost everyone, not just athletes.
What to look for in a supplement: the right ratio of sodium, potassium, and magnesium, with no added sugar and no artificial dyes. Sports drinks like Gatorade can serve a purpose during extreme exertion or severe dehydration, but the sugar and dye content make them a poor choice for daily use.
We carry LMNT in our office — it’s the product we recommend most consistently because it delivers a meaningful dose of all three key electrolytes (1,000 mg sodium, 200 mg potassium, 60 mg magnesium per serving) without anything that shouldn’t be there.
That said, supplementation isn’t one-size-fits-all. The right amounts for you depend on your kidney function, blood pressure, medications, activity level, and what’s actually showing up on your labs. More isn’t always better — excess sodium raises blood pressure in sensitive individuals, and too much potassium can be problematic for those with kidney issues. This is exactly why we look at the data first.
Its also important to note, many over-the-counter supplements are a mixed bag. Many underdose magnesium and potassium to begin with — but the bigger issue is the form. Magnesium oxide, the most common form in drugstore supplements, has an absorption rate of around 4%. Compare that to magnesium glycinate or malate, which are significantly better absorbed and gentler on the gut. Potassium is similarly limited in most retail products — the FDA caps potassium chloride in supplements at 99 mg per serving, a fraction of what most people actually need. The result is that someone can be diligently supplementing and still come up short. This is exactly the kind of thing that shows up in labs.
The Only Way to Know for Sure: Your Labs
General recommendations are useful. Your actual lab values are better.
As part of every new patient intake, Jennifer reviews your electrolyte levels alongside your hormones, metabolic markers, inflammatory markers, and more — over 80+ biomarkers in total. The goal isn’t just to see whether you fall within a “normal” reference range. It’s to understand whether your levels are truly optimal for you, and whether any deficiencies are connected to the symptoms you’re experiencing.
This is the difference between being told your sodium is “fine” and understanding that your magnesium is on the low end of normal, you’re drinking 100 oz of filtered water a day, and that connection may be exactly why you can’t sleep and your legs cramp at night.
That kind of specificity is what integrative medicine is built for.
Ready to see what your labs actually say?
Schedule your new patient appointment at restoration.healthcare, or call us at (512) 200-3240. We’re located at 141 E Mercer St #B, Dripping Springs, TX 78620 — and available virtually anywhere in Texas.
