A meta-analysis of 167 studies found a low-salt diet lowered blood pressure by 3.5 mmHg in people with hypertension and under 1 mmHg in others, while raising renin, aldosterone, adrenaline, noradrenaline, cholesterol and triglycerides.
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Food
Abnormal activation of a protein may explain deadly link between high salt intake and obesity
University of Tokyo researchers fed obese salt-sensitive rats a high-salt diet and found the protein Rac1 activating the mineralocorticoid receptor in kidney cells, a job normally done by aldosterone. That drove salt reabsorption, fluid retention and high blood pressure.
Minerals
High salt, low potassium means high death risk?
Americans eating a lot of sodium and little potassium were 50 percent more likely to die of any cause and twice as likely to die of a heart attack, in a CDC, Emory and Harvard analysis of NHANES data. Intake figures came from participants' recall of what they had eaten.
Minerals
Low salt may lower blood pressure, but not CVD death risk
Belgian researchers followed 3,681 people for about eight years and found cardiovascular deaths clustered in the group excreting the least sodium: 4.1 percent, against 0.8 percent among the highest excreters. Sodium excretion did not predict total deaths or non-fatal cardiovascular events.
Minerals
Americans Consume Too Much Sodium (Salt)
Americans eat more sodium than recommended, and research shows a dose-dependent link between salt intake and raised blood pressure. The Institute of Medicine sets adequate intake at 1,500 mg a day and an upper limit of 2,300 mg; pressure starts falling within days to weeks when intake drops.
Minerals
Avoiding This "Forbidden Food" Could Make You Moody
Dr. Mercola defends unrefined natural salt as essential to blood plasma, nutrient transport, blood pressure regulation and nerve signalling, while agreeing processed foods carry far too much sodium. He notes salts differ widely by origin and processing.
Minerals
Americans eat too much salt: What you need to know
A CDC survey of 2005-2006 data found only 9.6 percent of US adults kept sodium within their recommended limit, with 5.5 percent under 1,500 mg a day and 18.8 percent of the rest under 2,300 mg. Studies have linked high intake to gastric cancer, osteoporosis and kidney stones.
Minerals
Sodium Intake Among U.S. Adults
CDC's analysis of 2005-2006 NHANES data found only 9.6 percent of US adults kept sodium within their recommended limit: 5.5 percent of those advised to stay under 1,500 mg a day, and 18.8 percent of other adults under 2,300 mg.
Government
FDA urges cut-back on salt
The FDA is urging food manufacturers to cut the salt in processed foods rather than regulating it, betting that processors can self-regulate. Most Americans eat more than 3 grams of sodium a day, above dietary guidance. The salt industry disputes any heart disease link.
Minerals
Lower Salt Intake Lowers Cardiovascular Risk
A modeling study in the New England Journal of Medicine estimates that cutting daily salt intake by 3 grams would prevent 60,000 to 120,000 coronary heart disease cases, 32,000 to 66,000 strokes and 44,000 to 92,000 deaths a year, saving $10 to $24 billion.
Politics
New York City wants less salt in processed, restaurant foods
New York City's health department issued voluntary salt reduction targets covering 61 categories of packaged food and 25 classes of restaurant food, drawn up with health experts and industry, following its earlier trans fat limits and menu calorie posting rules.
Miscellaneous
Lowering salt in your diet - FDA
About 75 percent of Americans' salt comes from processed foods and restaurant cooking, not the shaker. The FDA explains that salt raises blood pressure in many people and that the 2005 Dietary Guidelines cap sodium at 2,300 mg a day, or 1,500 mg for groups including older adults.
Heart & Blood
High salt intake boosts stroke risk
Pooling 13 studies of 177,025 people, Italian researchers linked higher salt intake to 23 percent higher stroke risk and 14 percent higher risk of cardiovascular disease. They say imprecise measurement of salt intake likely means these effects are underestimated.
Minerals
CSPI: Restaurants serve meals high in salt
CSPI told the Senate Finance Committee that 85 of 102 meals it checked at 17 chain restaurants carried more than a day's worth of salt, some nearly four days' worth. Red Lobster's Admirals Feast topped the list at 7,106 mg, against a recommended 2,300 mg daily limit.
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