A large study of older Brazilians has uncovered a striking pattern in who adds extra salt to their food, revealing that the habit is shaped differently depending on whether you are male or female.
Researchers analyzed data from over 8,300 people aged 60 and older, collecting detailed information about what they ate and whether they routinely salted their meals at the table. The findings showed that 12.7% of men reported adding salt compared with 9.4% of women. But the more intriguing discovery was what drives each group to reach for the shaker.
For men, the picture was simple. Only two factors predicted whether they would add salt. Men who followed a special diet to manage high blood pressure were less than half as likely to salt their food. Men living alone were 62% more likely to do so than those sharing a home with others. Beyond that, little else mattered.
Women told a far more complex story. Their salt-adding behavior was tied to a broad web of lifestyle choices and dietary patterns. Women not following a diet for high blood pressure were 68% more likely to add salt. Living in a city doubled the odds. Regular consumption of ultra-processed foods also correlated with the habit.
On the flip side, women who ate fruit regularly were 81% less likely to add salt, and those who frequently consumed vegetables were 40% less likely. The researchers suggested this pattern may reflect women who pay closer attention to overall diet quality, including conscious efforts to limit sodium.
The differences between men and women may stem from how each group thinks about food and health. Men's salt-adding behavior appeared less tied to specific eating patterns, suggesting it might be driven more by individual preference or routine. Women's behavior, by contrast, seemed embedded in broader decisions about what to eat and how to live.
While the study establishes these associations, it does not prove that one causes the other. The researchers relied on people's own reports of what they ate and their habits, which can be inaccurate. Salt-use patterns may also have shifted since the surveys were conducted between 2016 and 2017.
The driving forces behind the habit likely involve both taste and routine. Eating salty foods regularly can dull your sensitivity to salt, pushing people to seek stronger flavors. In many cases, though, adding salt may simply be something people do automatically without thinking much about it.
High salt intake carries real health risks. The World Health Organization recommends that adults consume no more than five grams of salt per day. Too much salt can raise blood pressure, increase heart disease and kidney disease risk, and even accelerate cognitive decline. Much of the salt people consume comes from processed and prepared foods, but adding it at the table still accounts for between 6% and 20% of total intake.
Addressing the problem will likely require changes beyond individual choices. The researchers emphasized the need to reduce sodium in industrial and ultra-processed foods, which are major culprits in excessive salt consumption.
Still, people can take practical steps. Using herbs, natural seasonings, or citrus juice to flavor food offers alternatives to salt while keeping meals palatable. A simple tactic like not placing saltshakers on the table could help break the habitual reach. Because men and women showed such different patterns, public health campaigns might be more effective if they were designed differently for each group.
Author Jessica Williams: "The study's most compelling finding isn't that some people add salt, but how differently the habit functions between men and women, suggesting that one-size-fits-all salt reduction messaging may be missing the mark."
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