According to new research out of the University of Toronto, a high-salt diet, especially in the presence of low physical activity, is damaging to cognitive health in older individuals.
The evidence shows that consuming larger amounts of sodium (table salt being our main source), is not only detrimental to cardiovascular and heart health, but also cognitive function and brain health.
What's interesting is that while high salt intake with sedentary lifestyle was linked to cognitive decline, those who were sedentary, but consumed low amounts of salt were able to maintain cognitive health over the three-year study period.
This suggests that sodium reduction, especially in a sedentary population may help improve or maintain cognitive health (or at least slow down the rate of cognitive impairment).
Source: Sodium intake and physical activity impact cognitive maintenance in older adults: the NuAge Study
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