Sodium Audit — 2 Weeks

Log the sodium on every packaged item you eat for a week without changing anything, then spend the second week substituting the three biggest contributors.

3 min read August 17, 2026 AgeGen Editorial
Sodium Audit — 2 Weeks — AgeGen

Log the sodium on every packaged item you eat for a week without changing anything, then spend the second week substituting the three biggest contributors. More than 70% of dietary sodium comes from packaged, prepared and restaurant food rather than the salt shaker — which is why the audit almost always finds the intake somewhere other than where people assume.

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More than seventy per cent of dietary sodium comes from packaged, prepared and restaurant food — not the salt shaker.

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Mr. Age is AgeGen's editorial character. Facts come from the protocol above.

The protocol

  • Step 1. Log sodium in mg from every label, restaurant estimate and takeaway for 7 days — change nothing. The first week is measurement, not intervention.
  • Step 2. Rank the sources. The top three usually account for most of the total.
  • Step 3. In week 2, substitute those three — lower-sodium bread, unsalted nuts, a different sauce — and re-log.
  • Targets: the American Heart Association sets no more than 2,300 mg/day, with 1,500 mg/day an optimal goal for most adults.
  • Duration: 14 days.
  • Note. Cutting roughly 1,000 mg/day is the change the AHA describes as improving blood pressure for most people.

What you get

  • The actual sources, not the assumed ones. Bread, cured meat, cheese and sauces routinely outrank anything added at the table.
  • Blood pressure support. Sodium intake is one of the few dietary variables with a direct, well-mapped relationship to blood pressure.
  • No food is banned. Every step in the protocol is a substitution, not a removal — which is why the change survives past week two.
  • A habit that outlasts the audit. Label-reading, once learned on your own shopping basket, does not switch off on day fifteen.

Contraindications

  • Do not restrict sodium below a clinician's guidance if you take diuretics or have adrenal, kidney or heart failure conditions.
  • Endurance athletes training in heat have higher sodium requirements.
  • Salt substitutes are potassium-based — check with a clinician if you have kidney disease or take a potassium-sparing drug.

Evidence level

High. The relationship between sodium intake and blood pressure is one of the better-characterised in nutrition, and the intake figures behind "70% comes from packaged and restaurant food" come from national dietary surveillance rather than from any single trial. What the audit itself adds is not a new mechanism but a measurement: it tells you where your own intake sits before you try to change it.

An audit is easier to judge with a number on both ends — a home cuff is what I read it on.

What I use for this Evidence: Strong

Home Blood-Pressure Monitor

An upper-arm cuff for tracking blood pressure at home — one of the most informative numbers you can self-measure, since readings at the clinic are often higher (the white-coat effect).

See it in the shop →

Illustrative photo. We may earn a commission — the affiliate link and the full disclosure live on our shop page.

Sources

AgeGen never invents studies and never recommends prescription drugs by brand. Biohacks are experiments, not prescriptions — honour the contraindications and talk to a clinician if a condition above applies to you.

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