The Science

What the research says about blood volume, sodium, and POTS.

A woman in her fifties pauses at the bottom of a carpeted staircase in a lived-in home, gripping the wooden railing with one hand, catching her breath, with a laundry basket on the steps behind her.

The Deconditioning Loop in POTS: How It Starts, and the Gentle Way Out

Symptom avoidance and physical deconditioning can feed each other in POTS — a real loop, not a verdict on why you're sick, and a case for rebuilding slowly.

2026.08.14

A middle-aged man in a rumpled shirt sits at a cluttered home-office desk, pressing two fingers to his own wrist to check his pulse, looking down with a strained expression.

The Science

How POTS Shows Up Differently in Men — and Why It's Missed

POTS is framed as a young woman's condition, which leaves men's presentations under-recognized. What tends to look different, and why diagnosis often lags.

2026.08.12

A fingertip pulse oximeter and a smartphone showing a heart-rate reading of 72 bpm rest on a wooden bedside table beside a glass of water, a blister strip of pills, reading glasses and a worn paperback.

The Science

The 30-Beat Rule: What the POTS Heart Rate Criteria Actually Say

The 30 bpm (40 in adolescents) sustained standing threshold for POTS, the active-stand and tilt context, and why home readings mislead.

2026.07.06

Documentary close-up of a digital kitchen scale weighing coarse sea salt in a white ceramic ramekin, with a plain unmarked electrolyte stick pack and a glass of water beside it on a worn countertop.

The Science

How Much Salt Per Day for POTS — and How Clinicians Arrive at the Number

Where the 8-10 g salt target comes from, what it looks like in real meals and water, and the situations in which clinicians dial it back.

2026.06.12

Ezora health Glow+, LMNT, DripDrop, Ultima and Nuun electrolyte products grouped on a warm wood kitchen counter with a small dish of salt and a tall glass of water.

The Science

Best Electrolyte Brands for POTS: 5 Products Ranked

A sodium-first ranking of five popular electrolyte products against what POTS patients actually need each day.

2026.06.08

A jumble of unbranded electrolyte stick packets on a cluttered wood kitchen counter beside a half-full glass of water, with one packet torn open and a small spill of white powder, a coffee mug, a banana, and a laptop charger cable in frame.

The Science

The Best Electrolytes for POTS: What to Look For on the Label

Read the label like a clinician: sodium per serving is the number that matters, then weigh sugar, potassium, and third-party testing.

2026.06.05

A woman in a grey long-sleeve top sits at a wooden kitchen table with one hand pressed to her chest, looking off-frame toward a window; a glass of water, an open paperback, a phone, and a bowl of oranges are on the table, with a cluttered kitchen behind her.

The Science

POTS vs Anxiety: How to Tell Them Apart

Why autonomic tachycardia and panic feel so similar, the symptom patterns that actually separate them, and how clinicians work through the question.

2026.06.03

A woman at a home desk holds up a plain supplement bottle, reading it skeptically while comparing it against information on her laptop.

The Science

Potassium, Magnesium, and POTS: What the Evidence Actually Supports

Separating well-supported electrolyte roles from hopeful internet claims, and why 'more electrolytes' is not automatically better for POTS.

2026.05.10

A man who has just stood from his desk braces one hand on the desk and presses the other to his chest, pausing as a wave of dizziness hits.

The Science

Why Standing Up Makes Your Heart Race: The Autonomic Reflex

The baroreflex in everyday terms, what goes sideways with it in POTS, and how the body's compensation explains the racing heart and symptoms.

2026.04.19

A woman lies on a partially tilted medical exam table with a blood-pressure cuff and ECG electrodes, waiting calmly during a test.

The Science

The Tilt Table Test, Explained in Plain Language

What a tilt table test actually measures, the heart-rate pattern clinicians look for in POTS, and what a result does and does not tell you.

2026.04.05

Close on the hands of a woman at a wooden table dropping a few grains of salt from a small dish into a clear glass of water.

The Science

How Sodium Helps Your Body Hold On to Fluid

The osmosis-and-kidneys story behind 'salt and water' advice for POTS, explained simply — including why the effect has real limits.

2026.03.22

A man at a cluttered kitchen table reads a folded paper of test results, pen in hand over a notebook, brow furrowed in concentration.

The Science

What Is Blood Volume, and Why Does It Matter in POTS?

A plain-language explainer on blood volume, the standing response, the hypovolemic subtype of POTS, and where sodium and fluids fit in.

2026.03.08