Dizziness on standing: the ordinary explanation first — one year on

Dizziness on standing: the ordinary explanation first — one year on — setting out what I have, and where I think it stops being reliable.

A hydration and intake question, with the figures, since this one is unanswerable without them.

Fluid intake over a day, roughly, plus what I take with it and when. Intake is down substantially on where it was, which I gather is the ordinary consequence of eating much less rather than anything else.

What I would like to understand is which of the symptoms attributed to this are plausibly about fluid and salt, and which are being attributed there because it is the easy explanation.

Taking the opening post at face value and following it one step further.

The very ordinary causes of week-two malaise: inadequate hydration, low sodium intake, too-rapid calorie deficit, and inadequate sleep are more common causes of fatigue and malaise than compound toxicity.

If the premise is wrong, everything after it is decoration.

Where there is a genuine question, a measurement answers it and a supplement does not. Blood tests for the common electrolytes are routine and cheap.

What I would tell a new member reading about Dizziness on standing for the first time: the confident posts are not the reliable ones, and the reliable ones are longer.

The most useful thing anyone has posted about Dizziness on standing in this category was a table of what had been measured and by whom. That is what I would want again.

Building on post #3 rather than restating it.

The most useful posts here describe what was measured, what was changed, and what happened, in that order.

Adding it in case it saves somebody the afternoon it cost me.

Reading back through, this was answered upthread and I missed it. My fault.

Where the Dizziness on standing reasoning breaks down for me is the step from the group result to the individual case. That step is almost never argued for.

Commercial rehydration formulations are designed for a specific purpose and are not equivalent to a sports drink, whatever the marketing suggests.

Two claims get bundled together under Dizziness on standing and they need separating. The descriptive one — this is what was observed — is usually well supported. The causal one — this is why — usually is not.

Almost every disagreement in threads like this one dissolves once you say which of the two you are making.

Building on post #8 rather than restating it.

Constipation and hydration: dehydration makes constipation worse. Increasing fluid intake is the first intervention for constipation alongside other measures.

Post #10 put the caveat in the right place and I want to underline it.

Orthostatic symptoms: dizziness on standing after lying down can indicate dehydration or electrolyte depletion. Increasing fluids, salt, and potassium usually resolves it.

Nobody has said the unglamorous part of Dizziness on standing yet, so: most of the variation is explained by things that are boring to write about and easy to check.

My experience of Dizziness on standing contradicts the reply above. I am posting it as a data point rather than as a refutation, because one person's experience is exactly that.