Small reductions in salt content across commonly eaten foods like bread, packaged meals, and takeout could prevent thousands of heart attacks, strokes, and deaths without requiring any changes in eating habits. Two new studies published in Hypertension reveal that modest sodium cuts in everyday foods in France and the United Kingdom could deliver major public health benefits by lowering blood pressure across entire populations.
Consuming too much sodium is a leading contributor to high blood pressure, which increases the risk of serious health conditions including heart attack, stroke, chronic kidney disease, dementia, and other cardiovascular diseases. While the World Health Organization recommends adults consume less than 2,000 milligrams of sodium per day, average intake worldwide remains far higher. The American Heart Association advises no more than 2,300 milligrams daily, roughly one teaspoon of table salt, with an ideal limit of 1,500 milligrams per day for most adults, especially those with high blood pressure.
France Cuts Salt in Baguettes
In France, researchers examined the potential impact of a voluntary agreement between the government and bread producers to reduce salt content in baguettes and other breads by 2025. Bread, particularly the baguette, is a cultural staple in France and traditionally contains about 25 percent of the total daily recommended salt intake. By 2023, most bread produced in France already met the new sodium standards.
Using national data and mathematical modeling, researchers estimated how many cases of cardio-cerebrovascular disease, kidney disease, and dementia could be prevented if salt reduction targets achieved full compliance. The analysis found that if bread consumption remained unchanged and sodium targets were fully met, daily salt intake would drop by 0.35 grams per person, leading to modest but meaningful decreases in blood pressure.
With 100 percent compliance, the study projected that annual deaths would decline by 0.18 percent, translating to approximately 1,186 lives saved. Hospitalizations for ischemic heart disease would decrease by 1.04 percent, while hemorrhagic stroke admissions would fall by 1.05 percent and ischemic stroke admissions by 0.88 percent. Men would see the greatest overall benefits, with 0.87 percent of heart disease and stroke cases prevented compared to 0.63 percent among women. Among women, the highest proportion of preventable cases occurred in those aged 55 to 64 years old.
“This salt-reduction measure went completely unnoticed by the French population—no one realized that bread contained less salt,” said Clémence Grave, lead author of the French study and epidemiologist at the French National Public Health Agency. “Our findings show that reformulating food products, even with small, invisible changes, can have a significant impact on public health.”
UK Targets Packaged and Takeout Foods
The second study focused on the United Kingdom, analyzing national survey data to estimate the impact if food companies had fully met the country’s 2024 sodium reduction targets. Sales-weighted average and maximum salt content targets were established for 84 grocery food categories, including bread, cheeses, meats, and snacks. For the first time, the targets also included 24 out-of-home categories such as burgers, curries, and pizza.
Researchers found that fully meeting these goals could have reduced average daily salt intake from about 6.1 grams to 4.9 grams, a 17.5 percent reduction per person. Men would experience slightly larger reductions than women because they generally consume more salt. Even these small daily reductions were expected to lower blood pressure modestly across the population, with benefits accumulating over time.
Over a 20-year period, the model estimated that approximately 103,000 cases of ischemic heart disease and about 25,000 strokes could be prevented in the United Kingdom. Across lifetimes, the blood pressure reductions were projected to generate roughly 243,000 additional quality-adjusted life years and save £1 billion, about $1.3 billion in U.S. dollars, for the National Health Service.
“We know that cardiovascular disease is a leading cause of death in the UK—as it is worldwide—so any reductions in salt intake and blood pressure could lead to big benefits,” said Lauren Bandy, lead author of the UK study and researcher at the University of Oxford. “We also know that the food industry still has a lot of progress to make when it comes to salt reduction, so there’s a lot of room for improvement.”
Healthier Food Environment by Default
Both studies highlight an approach that does not rely on individual behavior change, which is often difficult to achieve and maintain. Instead, reducing sodium in commonly consumed foods creates a healthier food environment automatically.
“This approach is particularly powerful because it does not rely on individual behavior change, which is often difficult to achieve and sustain,” Grave explained. “Instead, it creates a healthier food environment by default.”
Daniel W. Jones, chair of the 2025 American Heart Association/American College of Cardiology High Blood Pressure Guideline and dean and professor emeritus at the University of Mississippi School of Medicine, said the findings are relevant to the United States and any country where much of the food consumed is prepared outside the home. “Though sodium reduction makes small improvements in blood pressure at the individual level, these small changes in individuals result in major improvements in a large population,” he said.
The French study used systolic blood pressure data for adults ages 35 and older and salt intake estimates from a 2014-2016 national survey, combined with 2022 statistics from the national health care claims database. The UK study collected daily salt intake data from the National Diet and Nutrition Survey conducted in 2018-2019 and included 586 participants ages 18 and older, weighted to represent the UK population.
Both studies acknowledged limitations tied to modeling assumptions. The French researchers noted it is impossible to directly measure the isolated impact of reducing salt in bread because the change occurs alongside other factors like behavioral modifications or variations in bread consumption. The UK study noted that some data on salt content may not reflect changes made closer to 2024, and dietary survey data relied on self-reported intake, which can underestimate sodium consumption, particularly from restaurant and takeaway foods.
The researchers emphasized that the findings underscore the importance of coordinated efforts among policymakers, the food industry, and public health leaders. Strengthening and enforcing sodium reduction programs globally could deliver lasting improvements in cardiovascular health and prevent tens of thousands of heart attacks and strokes without requiring people to change their eating habits.
