Processed Meats Have Been Linked to Dementia Risk
A new review suggests replacing ultra-processed foods in your diet could significantly lower your cognitive decline risk.
Updated on Sept. 28, 2026 in Alzheimer’s
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Do you plan to reduce your daily intake of deli meat based on recent health studies?
Researchers have found that daily consumption of processed meats is linked to a 44 to 52 percent increased risk of dementia. This analysis of 170 studies also identifies a 19 percent reduction in cognitive risk when ultra-processed foods are swapped for healthier alternatives.
Why it matters
With seven million Americans currently living with dementia and cases expected to double by 2050, identifying diet-related risk factors has become critical for long-term brain health. Reducing intake of ultra-processed items may offer a practical, preventive approach to mitigating cognitive decline.
A comprehensive review of 170 studies involving 500,000 people evaluated the impact of dietary habits on cognitive function. The findings showed that replacing 10 percent of calories from ultra-processed foods with unprocessed options correlates with a 19 percent lower risk of dementia.
The details
Processed meats often contain additives like nitrates, which are suspected of triggering systemic inflammation and damaging blood vessels. Over time, these preservatives may also be converted into carcinogens that harm healthy cells, potentially accelerating cognitive and reasoning deficits. This mechanism is further supported by data indicating that high ultra-processed food intake is associated with a 22 to 53 percent higher chance of developing symptoms of depression or anxiety.
Timeline
Over the course of eight years, a Brazil-based study tracked significant declines in memory and reasoning skills.
By 2050, the total number of Americans living with dementia is projected to double.
Health Landscape
This research builds upon long-standing data from large-scale repositories like the UK Biobank to categorize the specific cognitive risks of modern diets. It highlights a shift in public health focus from general nutrition toward the neurological impacts of ultra-processed food consumption.
Consider auditing your intake of processed items, as even small amounts like one strip of bacon or two slices of deli turkey daily are associated with increased risks. Discuss potential dietary shifts to prioritize unprocessed foods with your doctor to support your long-term cognitive health.
The takeaway
Limiting daily intake of ultra-processed foods is a viable, evidence-backed strategy to protect your memory and reasoning skills. When planning meals, focus on replacing processed options with whole-food alternatives to potentially reduce your long-term risk of cognitive impairment.
Further reading
For more information on the latest research into cognitive health, visit our Alzheimer’s section.
Source note: This article includes information reported by Mail Online.
Live Poll
Do you plan to reduce your daily intake of deli meat based on recent health studies?
