“Natural Salt Is OK to Eat a Lot Of” Is a Dangerous Misconception — What the WHO and a 20,000-Person Randomized Trial Actually Show

[Level 1 (Strongest)] [Diet] [Strongly recommended]

“Sea salt and rock salt contain minerals, so they’re healthy.” “Refined salt is bad.” “Natural salt is fine in larger amounts.” You hear these claims constantly. But here’s the conclusion up front: the health difference between salt types is essentially zero, and “natural salt is OK to consume in larger amounts” is a dangerous misconception. This article lays out the evidence.

💡 Bottom line first: Every salt is 90%+ sodium chloride. The mineral content of “natural” salts is nutritionally irrelevant. What the WHO and a 20,000-person randomized trial show is that what matters is (1) cutting total intake and (2) switching to potassium-chloride-substituted salt.

1. Every salt is sodium chloride at heart

In other words, all salts are 90%+ the same sodium chloride. “Natural salt has less sodium” is plainly wrong.

2. “Contains minerals, therefore healthy” — the misleading part

The fact: yes, minerals are present.

The problem: in amounts that are nutritionally irrelevant.

Specifics with the math:

Potassium in pink Himalayan salt

• ~2.8 mg per 100 g (trace amount)
• Daily potassium recommendation: 3,500 mg
• To hit the daily recommendation from salt alone, you’d need to eat 125 kg of salt per day
• You’d obviously die of sodium overload long before that

Magnesium

• 1.06 mg per 100 g of pink Himalayan salt
• Daily recommendation: 310 mg → would require 30 kg of salt per day

McGill University Office for Science and Society’s official position: “The mineral content of Himalayan and sea salts is nutritionally irrelevant — just enough to add color.”

3. Unified guidance from the WHO and major cardiology societies

The WHO, American Heart Association (AHA), European Society of Cardiology (ESC), and Japan Society of Hypertension all agree:

“Regardless of origin, color, or grain size, what determines blood pressure and cardiovascular risk is total sodium intake — full stop.”

Reality in Japan: men consume 10.7 g/day, women 9.1 g/day — nearly twice the target (MHLW National Health and Nutrition Survey).

4. “Electrolytically refined salt is bad” is also wrong

Most table salt in Japan is produced by ion-exchange membrane electrodialysis:

• ≥99.5% pure NaCl
• Impurities and trace elements removed
• Cheap to produce, quality-stable

The “electrolytic salt is bad” claim assumes “no minerals = bad.” But minerals are far better obtained from other foods (salt is an extremely inefficient mineral source), so the logic doesn’t hold.

5. The salt improvement that actually has Level 1 evidence — SSaSS

The only “salt improvement” currently proven down to cardiovascular events and mortality:

SSaSS trial (*NEJM* 2021, cluster-randomized in 600 rural Chinese villages, n=20,995)

Replacing regular salt with “75% NaCl + 25% KCl (potassium chloride) reduced-sodium salt” for ~5 years:

Such products are widely sold in Japan as “減塩しお,” “やさしお,” and similar names (designed to replace sodium with potassium).

This is currently the only Level 1 evidence base for salt. Pink Himalayan salt and sea salt have nothing of the kind.

6. Japan-specific considerations

Japanese consumers need to be especially careful about salt:

• Genetically higher salt sensitivity (East Asian phenotype)
• Average intake men 10.7 g/day, women 9.1 g/day (2× WHO target)
• Higher rates of stroke (especially hemorrhagic) than Western countries — strongly linked to hypertension
• Okinawa’s traditional longevity is closely tied to a low-salt diet
• The historically high stroke rates in Akita and the Tohoku region are well-documented to track salt intake

“Natural salt is OK to consume in larger amounts” is particularly dangerous in the Japanese context.

7. The optimal home setup

“Stop using pink Himalayan salt” is the wrong message. The right message: “Enjoy fancy salts for flavor, but don’t let the ‘natural = healthy’ marketing make you think more is OK. If you genuinely want a health benefit, switch to KCl-substituted salt — that’s the only evidence-supported choice.”

8. evidage 4-axis scoring

For “reduced-sodium + KCl-substituted salt” in the 4-axis weighted scoring:

→ Comparable to #9 “Microplastics exposure reduction” (8.15). Could merit a Top 10 review in the next update.

9. Summary

• The health difference between salt types is essentially zero — all are 90%+ sodium chloride
• “It has minerals so it’s healthy” is at marketing-hype levels — quantities are nutritionally irrelevant
• “Natural salt is OK in larger amounts” is clearly wrong — and dangerously erodes salt-reduction awareness
• What works is “cut total intake” + “switch to KCl-substituted salt”: stroke −14%, mortality −12% in SSaSS
• Japanese are genetically more salt-sensitive — extra care warranted

⚠️ Disclaimer

This article is not medical advice. KCl-substituted salt is contraindicated or requires caution in people with reduced kidney function (potassium restriction), adrenal insufficiency, or on ACE inhibitors, ARBs, or potassium-sparing diuretics. Consult your physician.

📚 Related pages

• “Salt Is Fine If You Drink Enough Water” — Is That True?
• Monthly Top 10
• Evaluation Method — evidage’s 4-axis weighted scoring framework
• Evidence Basics

References

• Neal B et al. *NEJM* 2021; “Effect of Salt Substitution on Cardiovascular Events and Death” (SSaSS, n=20,995)
• WHO Guideline 2012; “Sodium intake for adults and children”
• Cappuccio FP, WHO factcheck; “Sea salt is as bad for blood pressure as table salt”
• McGill Office for Science and Society; “Table salt, kosher salt, sea salt, Himalayan salt”
• Japan MHLW, “Dietary Reference Intakes (2020)”
• Japan Society of Hypertension, “Hypertension Treatment Guidelines 2019”