Our read is that many individuals may benefit from increasing their salt intake, as adequate sodium is crucial for proper bodily functions.
✓WELLSUPPORTED
⚠
High-risk intervention — consult a physician before acting.Drug-drug interactions, dose-dependence, and screening contraindications apply.
Consensus
89%
broad agreement
Evidence quality
77/100
developing
Risk
High
specialist only
Cost / month
$
estimated
Effort
Low
time & habit
Abstract
Our read is that sufficient sodium levels are necessary for the proper functioning of the brain and nervous system, including nerve cell communication and nerve-to-muscle signaling, as highlighted by Andrew Huberman. Paul Saladino suggests that consuming 6-7 grams or even 10 grams of salt per day can be beneficial for many individuals, challenging the notion that the RDA for sodium is too low.
However, Paul Saladino also cautions against excessive sodium restriction, which can lead to issues like orthostatic hypotension and insulin resistance, and warns about potential heavy metal contamination in certain trendy salts. Peter Attia notes that salt concentration, rather than total amount, is key for blood pressure, and that sodium chloride is the primary electrolyte linked to hypertension, unlike other electrolytes.
Method
Ingesting appropriate amounts of salt depends on individual factors like blood pressure, activity level, sweat rate, and cognitive/physical demands, according to Andrew Huberman. Liquid intake should include a proper balance of electrolytes, specifically sodium, potassium, and magnesium, as noted by Andrew Huberman and Bryan Johnson.
Evidence detail
01ACSM guidelines recommend an initial sodium intake of 7-10 grams per day for athletes in hot or humid environments (Paul Saladino).
02A natural craving for more sodium is hardwired into humans as a mechanism to help meet stress challenges (Andrew Huberman).
03Sufficient sodium levels in the body are necessary for the brain and nervous system to function properly (Andrew Huberman).
04Neurons in the brain have salt receptors that fire action potentials when salty substances are detected (Andrew Huberman).
Conflict Watch
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
05Salt concentration, rather than the total amount of salt, is the key factor influencing blood pressure (Peter Attia).
06Consuming 6-7 grams or even 10 grams of salt per day can be beneficial for many individuals, as the RDA for sodium is too low (Paul Saladino).
07Ketone salts, specifically sodium bicarbonate, sodium citrate, and sodium beta hydroxybutyrate, do not cause the same hypertensive effects as sodium chloride when consumed in large doses (Peter Attia).
08Salt sensors in the digestive tract contribute to salt sensation, cravings, and satiety (Andrew Huberman).
09Adequate salt intake is crucial for nerve cell communication and nerve-to-muscle signaling (Andrew Huberman).
10Ingesting appropriate amounts of salt is beneficial, with the definition of 'appropriate' depending on individual factors like blood pressure, activity level, sweat rate, and cognitive/physical demands (Andrew Huberman).
11Sodium chloride appears to be the major electrolyte contributor to hypertension, whereas other electrolytes like potassium and calcium are largely benign unless consumed in excess of 10 grams per day (Peter Attia).
12For individuals on ketogenic or carnivore diets experiencing electrolyte issues, adding a moderate amount of carbohydrates based on activity level, rather than just more salt, can resolve the problem (Paul Saladino).
13Liquid intake should include a proper balance of electrolytes, specifically sodium, potassium, and magnesium (Andrew Huberman, Bryan Johnson).
14The action potential, or neuronal firing, is initiated when sodium ions rush into the neuron, changing its internal charge from negative to positive and triggering the release of neurotransmitters (Andrew Huberman).
Caveats
Our read is that while increasing salt intake can be beneficial, there are important caveats. Paul Saladino notes that studies on ancestral salt intake may not have accounted for various sources, and challenges Loren Cordain's view on low sodium intake in hunter-gatherer diets. He also warns that collecting sea salt from busy beaches is a poor method due to contamination, and that certain trendy salts can contain high levels of lead, arsenic, and aluminum, with one popular sea salt testing five times higher in lead than California Proposition 65 levels. Consuming 7-10 grams of salt daily can lead to significant heavy metal accumulation if the salt contains them. Paul Saladino also states that excessive sodium restriction can cause misery, orthostatic hypotension, potential erectile dysfunction, activate the renin-aldosterone system, and lead to insulin resistance. Andrew Huberman advises that high salt concentration fluid used as a dental rinse should be swished and spit out. Paul Saladino also points out that Morton iodized sea salt contains undesirable additives.
What would change this verdict
Our read is that the verdict would change if new evidence emerged consistently demonstrating that moderate to high salt intake, even from uncontaminated sources, leads to widespread negative health outcomes across diverse populations, or if the mechanisms by which sodium supports neurological and physiological functions were disproven. Conversely, further research clarifying optimal individual salt intake ranges based on genetics, activity levels, and health conditions would refine the verdict.