High salt intake linked to faster memory decline in one group, study finds

Excess brackish intake has agelong been linked to higher humor pressure, but present a caller survey has besides tied it to quicker cognitive diminution successful definite groups.

In a six-year survey of much than 1,200 older adults 60 and older, Australian researchers recovered that higher baseline dietary sodium intake was associated with faster diminution successful "episodic recall" successful men, but not successful women. 

"Episodic callback is simply a benignant of representation utilized to callback idiosyncratic experiences and circumstantial events from one’s past, specified arsenic wherever you parked your car oregon your archetypal time of school," according to survey writer Samantha Gardener, PhD, a probe chap successful neuroscience astatine the School of Medical and Health Sciences astatine Edith Cowan University successful Western Australia.

A caller survey has linked higher brackish intake to quicker cognitive diminution successful definite groups. (iStock)

"We did not spot immoderate narration betwixt the magnitude of sodium consumed and representation diminution successful females," she told Fox News Digital.

The uncovering suggests that sodium intake whitethorn beryllium a modifiable hazard origin for representation diminution successful older males.

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While males did study consuming a greater magnitude of sodium than females, which could explicate wherefore the accrued cognitive diminution was lone observed successful males, it could besides beryllium owed to their higher diastolic humor pressure, according to Gardener.

"We did not spot immoderate relationships betwixt the magnitude of sodium consumed and representation diminution successful females," the researcher told Fox News Digital. (iStock)

"Elevated humor unit is simply a recognized hazard origin for cardiovascular illness and Alzheimer’s disease, and sodium plays a cardinal relation successful humor unit regulation," she said.

The probe relied connected information from the Australian Imaging, Biomarkers and Lifestyle (AIBL) survey of aging. The findings were published successful the Neurobiology of Aging.

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"This survey adds to the grounds that high-sodium diets whitethorn impact much than humor pressure," New Jersey-based registered dietitian Erin Palinski-Wade, who was not progressive successful the study, told Fox News Digital. 

"These survey findings are a bully reminder that sodium intake matters for encephalon and bosom health, particularly for adults who already devour much than recommended."

Study limitations

"While excess sodium whitethorn interaction cognition, it is important to enactment that this was a longitudinal observational study, meaning it tin amusement an relation but cannot regularisation retired different imaginable factors similar wide fare quality, carnal enactment oregon different comorbidities," Palinski-Wade noted.

"We did not spot immoderate relationships betwixt the magnitude of sodium consumed and representation diminution successful females," the researcher told Fox News Digital. (iStock)

Also, the participants reported their sodium intake via a nutrient frequence questionnaire, which could beryllium taxable to callback error, the researchers pointed out.

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As sodium vulnerability was measured lone astatine baseline, changes successful intake implicit clip were not captured by the study. It besides lone included sodium contented successful foods and beverages, and did not see brackish added during cooking oregon astatine the table.

The participants were mostly Caucasian, which means the results whitethorn not use to different populations.

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"We were not capable to place wherefore sodium intake is having this effect, and this volition beryllium researched successful the future," Gardener told Fox News Digital.  

"These findings are preliminary, and further probe is required to measure however sodium intake could beryllium incorporated arsenic 1 modifiable manner origin aimed astatine delaying Alzheimer’s illness onset."

Tips for reducing sodium intake

The existent Dietary Guidelines for Americans recommends little than 2,300 mg of sodium per time for adults, which is equivalent to astir 1 spoon of array salt.

Typical high-sodium foods successful the U.S. fare see pizza, sandwiches and burgers, deli meats, and chips, crackers and salty snacks. 

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Other high-sodium foods successful the market store see canned foods, crockery dressings, deli meats, cheeses and condiments, according to Tanya Freirich, a registered dietitian and certified diabetes attraction and acquisition specializer successful North Carolina.

Up to 80% of sodium intake comes from processed foods, she noted.

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"Replacing 1 processed snack – specified arsenic beef jerky, olives, salted nuts, pretzels and bagged murphy oregon maize chips – with an unprocessed snack is simply a large spot to start," Freirich, who besides was not progressive successful the research, told Fox News Digital.

Healthier, unprocessed snacks see fruit, lightly salted nuts, carrots and hummus, oregon lower-sodium versions of chips, she said.

"Fill your fare with foods that beforehand bosom health, including full fruits and vegetables, nuts and seeds, legumes, and thin proteins," a nutritionist advised. (iStock)

"Replacing a fewer accelerated nutrient meals with nutrient prepared astatine location is besides an fantabulous mode to trim your sodium intake by thousands of milligrams," the adept advised.

Palinski-Wade echoed that the bulk of sodium successful the fare doesn’t travel from the brackish shaker, but from ultraprocessed and prepared foods. 

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"Read the labels, show your intake, and capable your fare with foods that beforehand bosom health, including full fruits and vegetables, nuts and seeds, legumes, and thin proteins," she advised.

Successfully lowering sodium intake tin trim the hazard of not lone precocious humor unit and cognitive decline, but besides kidney and cardiovascular disease, the experts agreed.