How does age change the impact of processed meat?
Older adults bear a heavier burden from processed meat consumption. A 2025 study in China found that colorectal cancer deaths and disability-adjusted life years (DALYs) attributable to processed meat were highest in older age groups, with mortality rates rising steeply from 1990 to 2021 [1]. Specifically, the age-standardized death rate increased from 0.23 to 0.32 per 100,000, and DALYs rose from 5.83 to 8.57 per 100,000, with the steepest increases occurring between 2007 and 2011 [1]. This means that as people age, the cumulative damage from processed meat becomes more pronounced.
Younger adults, however, show different patterns. A 2025 U.S. study of over 10,000 adults aged 40–100 found that those aged 40–60 were 47% more likely to reduce processed meat consumption during the COVID-19 pandemic compared to those aged 61–80, and over twice as likely compared to those aged 81–100 [6]. This suggests younger adults may be more responsive to health messaging, but it also implies older adults are less likely to change habits, making them a key target for interventions.
In Mexico, processed meat consumption remained stable overall from 2006 to 2020, but among 6–19 year olds, intake actually increased slightly [3]. This early exposure could set the stage for greater health risks later in life, as the effects accumulate over decades.
Do men and women respond differently to processed meat?
Yes, men consistently show higher risks from processed meat than women. In China, males had higher mortality and DALY rates from colorectal cancer attributable to processed meat in 2021 [1]. A Korean study of over 20,000 adults found that higher processed meat consumption increased the risk of dyslipidemia (abnormal blood fats) by 32% in men and 10% in women, compared to the lowest consumption group [2]. Similarly, a Finnish study on type 2 diabetes risk found that substituting processed meat with plant-based foods reduced risk in men but not significantly in women [4].
The biological reasons may lie in metabolism. A 2022 UK Biobank study of nearly 80,000 participants found that processed meat had sex-specific associations with blood metabolites: in women, it was more strongly linked to branched-chain amino acids and certain lipoproteins (which are risk markers for diabetes and heart disease), while in men, the associations were stronger with apolipoprotein A1 and creatinine [8]. This means the same amount of processed meat may trigger different metabolic pathways in men and women, leading to different disease risks.
Interestingly, a 2025 U.S. study found that women were 23.6% less likely than men to report reducing processed meat consumption during the pandemic [6]. This suggests that while men may be at higher risk, women may face greater difficulty in cutting back, possibly due to different dietary habits or social roles.
Does your starting health matter?
Absolutely. People with existing health conditions are more vulnerable to the harms of processed meat. A Chilean study of nearly 8,000 adults found that high processed meat consumption (≥5 times per week) was associated with a 2.28 times higher prevalence of cardiovascular disease, and this link was partly mediated by obesity (5% of the effect) and diabetes (13.9% of the effect) [5]. This means that if you already have obesity or diabetes, eating processed meat may worsen your heart health more than it would for a healthy person.
A large UK Biobank study of 475,000 adults confirmed that higher processed meat intake was associated with increased risks of ischemic heart disease (15% higher per 70g/day), pneumonia (31% higher), diverticular disease (19% higher), and diabetes (30% higher) [9]. Importantly, body mass index (BMI) accounted for a substantial portion of these risks, meaning that overweight individuals are doubly affected—both by their weight and by the meat itself [9].
Genetic background also plays a role. A Korean study found that people carrying a specific variant of the APOA5 gene (rs662799) who ate high amounts of red and processed meat had a 70% higher risk of developing metabolic syndrome compared to those without the variant who ate less meat [7]. This shows that baseline genetic health can amplify the negative effects of processed meat.
About These Sources
This answer is built on 9 peer-reviewed studies — published from 2021 to 2025, 3 from 2024 or later, 6 in Q1 journals, collectively cited 232 times — selected as the most relevant from 15 studies that passed quality screening, drawn from 51 papers retrieved from a database of over 500 million.
Sources used in this answer
Burden of colon and rectum cancer attributable to processed meat consumption in China, 1990–2021
In China (1990–2021), colorectal cancer burden from processed meat rose significantly; males and older adults had higher mortality and DALY rates.
Red meat and processed meat consumption and the risk of dyslipidemia in Korean adults: A prospective cohort study based on the Health Examinees (HEXA) study
In a Korean cohort of 20,407 adults, higher processed meat intake increased dyslipidemia risk by 32% in men and 10% in women.
Trends in Unprocessed Red and Processed Meat Consumption in the Mexican Population, 2006–2020
In Mexico (2006–2020), processed meat consumption remained stable overall but increased slightly among 6–19 year olds.
Partial substitution of red or processed meat with plant-based foods and the risk of type 2 diabetes
In Finnish adults (n=41,662), substituting processed meat with plant foods reduced type 2 diabetes risk in men but not significantly in women.
Processed meat consumption and associated factors in Chile: A cross-sectional study nested in the MAUCO cohort
In Chile (n=7,841), high processed meat intake was linked to 2.28 times higher cardiovascular disease prevalence, partly mediated by obesity and diabetes.
Age and Gender Disparities in Processed Meat Consumption During the COVID-19 Pandemic
In 10,050 U.S. adults aged 40–100, women were 23.6% less likely than men to reduce processed meat consumption during the pandemic; younger adults (40–60) were more likely to reduce than older groups.
Interactions between red and processed meat consumption and APOA5 gene variants associated with the incidence of metabolic syndrome in Korean adults
In Korean adults (n=3,266), those with the APOA5 rs662799 G allele and high red/processed meat intake had 70% higher metabolic syndrome risk.
Sex-Specific Associations of Red Meat and Processed Meat Consumption with Serum Metabolites in the UK Biobank
In UK Biobank (n~79,644), processed meat had stronger positive associations with branched-chain amino acids and lipoproteins in women than in men.
Meat consumption and risk of 25 common conditions: outcome-wide analyses in 475,000 men and women in the UK Biobank study
In UK Biobank (n=474,985), higher processed meat intake was associated with 30% higher diabetes risk and 15% higher ischemic heart disease risk, partly explained by BMI.