Should everyone cut down on salt?

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1. 1

   Association Between Changes in Salt Intake and Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

   Nutrition reviews (Zhang et al.)Published Sep 1, 2026Checked Oct 4, 2026

   “Discrepancies were resolved by discussion or third-reviewer adjudication. Salt was used as the primary exposure metric (measured in grams per day; conversion: 1 g sodium = 2.54 g salt).Data analysisRandom-effects meta-analyses compared standardized intake categories (high >15 g d-1; moderate 5-15 g d-1; low ConclusionsAcross 43 randomized controlled trials (1983-2024), higher amounts of salt intake were associated with higher BP, whereas lower intake was associated with larger BP reductions, demonstrating a graded association across intake categories. Exploratory study-level continuous trends were not statistically significant, consistent with residual heterogeneity, exposure measurement error, and adherence variation. These findings support individualized salt-reduction strategies and robust public-health measures, including food reformulation and national salt-reduction programs, to reduce the burden of hypertension and cardiovascular disease.Systematic review registrationPROSPERO registration No. CRD42024617388.”

2. 2

   Joint Expert Consensus on the Sodium Reduction Policy in Taiwan: A Collaborative Declaration by the Taiwan Hypertension Society (THS), Taiwan Society of Cardiology (TSOC), International Life Sciences Institute (ILSI), and Nutrition Society of Taiwan (NST).

   Acta Cardiologica Sinica (Cheng et al.)Published Sep 1, 2026Checked Oct 4, 2026

   “Meta-analyses indicate that reducing sodium by 1 g/day lowers systolic blood pressure by about 3 mmHg in hypertensive individuals, and randomized trials such as the Salt Substitute and Stroke Study show that potassium-enriched salt can reduce stroke and major CV events. In Taiwan, sodium is derived mainly from salt, sauces, and processed foods, underscoring the need for both household- and industry-level interventions.Scope of the recommendationThe consensus recommends limiting sodium intake to 3.5 g/day from fruits, vegetables, legumes, or potassium-enriched salts (with caution in those at risk of hyperkalemia). Key policy actions include mandatory front-of-pack sodium labeling, food reformulation, institutional procurement standards, and sustained public education, supported by multi-sectoral collaboration across government, academia, industry, and civil society.”

3. 3

   Guidelines for daily sodium intake: a counterpoint to the current recommendation for low sodium intake.

   Sleep advances : a journal of the Sleep Research Society (Mente)Published Jul 22, 2026Checked Oct 4, 2026

   “However, these guidelines were created without effective means of maintaining low-sodium diets in real life, and strong evidence is lacking that shows low sodium intake leads to fewer cardiovascular events compared with average intake levels. This review evaluates whether the advice to consume less sodium is backed by solid evidence. It argues that most people consume a moderate amount of sodium (3 to 5 g per day), which is associated with the lowest risk of cardiovascular disease, and recommends a target below 5 g per day. Results from large randomized controlled trials evaluating the effect of sodium reduction on clinical events and mortality are awaited. This is particularly relevant in clinical practice, where sodium-containing medications such as sodium oxybate (SO), a mainstay in narcolepsy treatment, contribute to daily intake but are not considered by sodium guidelines. Clinicians should evaluate each patient's total sodium intake from both diet and medications and make personalized recommendations based on their cardiovascular and renal risk profile.”

4. 4

   Low sodium diet (Wikipedia)

   WikipediaPublished Sep 29, 2026Checked Oct 4, 2026

   “A low sodium diet is a diet that includes no more than 1,500 to 2,400 mg of sodium per day. The human minimum requirement for sodium in the diet is about 500 mg per day, which is typically less than one-sixth as much as many diets "seasoned to taste". For certain people with salt-sensitive blood pressure or diseases such as Ménière's disease, this extra intake may cause a negative effect on health. WHO guidelines state that adults should consume less than 2,000 mg of sodium/day (i.e. about 5 grams; 1⁄6 oz of traditional table salt), and at least 3,510 mg of potassium per day. In Europe, adults and children consume about twice as much sodium as recommended by experts.”