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 now a caller study has besides tied it to quicker cognitive diminution successful definite groups.

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

"Episodic callback is simply a type of representation utilized to callback individual experiences and circumstantial events from one’s past, specified arsenic wherever you parked your car aliases your first time of school," according to study writer Samantha Gardener, PhD, a investigation chap successful neuroscience astatine nan School of Medical and Health Sciences astatine Edith Cowan University successful Western Australia.

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

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

The uncovering suggests that sodium intake whitethorn beryllium a modifiable consequence facet 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 why nan accrued cognitive diminution was only observed successful males, it could besides beryllium owed to their higher diastolic humor pressure, according to Gardener.

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

"Elevated humor unit is simply a recognized consequence facet for cardiovascular disease and Alzheimer’s disease, and sodium plays a cardinal domiciled successful humor unit regulation," she said.

The investigation relied connected information from nan Australian Imaging, Biomarkers and Lifestyle (AIBL) study of aging. The findings were published successful nan Neurobiology of Aging.

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

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

Study limitations

"While excess sodium whitethorn effect cognition, it is important to statement that this was a longitudinal observational study, meaning it tin show an relation but cannot norm retired different imaginable factors for illustration wide fare quality, beingness activity aliases different comorbidities," Palinski-Wade noted.

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

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

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

The participants were mostly Caucasian, which intends nan results whitethorn not use to different populations.

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

"These findings are preliminary, and further investigation is required to measure really sodium intake could beryllium incorporated arsenic 1 modifiable manner facet 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 balanced to astir 1 spoon of array salt.

Typical high-sodium foods successful nan 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 nan market shop see canned foods, crockery dressings, deli meats, cheeses and condiments, according to Tanya Freirich, a registered dietitian and certified diabetes care and acquisition master 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 aliases maize chips – pinch an unprocessed snack is simply a awesome spot to start," Freirich, who besides was not progressive successful nan research, told Fox News Digital.

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

"Fill your fare pinch 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 pinch nutrient prepared astatine location is besides an fantabulous measurement to trim your sodium intake by thousands of milligrams," nan master advised.

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

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"Read nan labels, show your intake, and capable your fare pinch 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 nan consequence of not only precocious humor unit and cognitive decline, but besides kidney and cardiovascular disease, nan experts agreed.