Bratwurst: one link is already more than the 50 g the studies count

Nobody has run a trial on bratwurst itself, so what we know comes from research on processed meat. The strongest piece is a randomized trial in 113 healthy adults aged 18 to 50. After 12 weeks on a diet built around red and processed meat, a marker of DNA damage in stool water rose by about 16% (95% CI 4.6 to 27.3%), while a pesco-vegetarian diet produced no significant change. That is a biomarker in the gut and not a count of cancers. The cohort data point the same way and are observational. Across 31 cohorts with 1.97 million adults followed for a median 10 years, each extra 1.8 oz (50 g) of processed meat a day went with a 15% higher rate of type 2 diabetes (HR 1.15, 95% CI 1.11 to 1.20). A bun-size bratwurst link weighs 2.6 oz (75 g) in USDA survey data, so one link a day is already above that 50 g step. Cooked pork bratwurst carries about 10 g of saturated fat, 39.7 mcg of selenium and 0.459 mg of thiamin per 3.5 oz (100 g), and across six USDA bratwurst recipes saturated fat runs from 6.08 to 14.94 g per 3.5 oz (100 g).

The numbers, per 3.5 oz (100 g)

As people eat it, per 3.5 oz (100 g)

How much is actually in it

• USDA data list cooked pork bratwurst at 39.7 ug selenium, about 10 g saturated fat and 0.459 mg thiamin per 3.5 oz (100 g). — USDA SR Legacy Bratwurst, pork, cooked (FDC 171620) (n = 1 record) Evidence E source
  Per 100 g: selenium 39.7 ug, saturated fat 9.998 g, thiamin 0.459 mg; across 6 USDA bratwurst records selenium 14.1-39.7 ug, saturated fat 6.08-14.94 g, thiamin 0.054-0.459 mg

What a real portion looks like

• In USDA survey data one bun-size bratwurst link weighs 2.6 oz (75 g), and an unspecified serving is counted as 60 g. — USDA FNDDS Bratwurst, food code 25220350 (fdc_id 2706174) (n = 3 measures) Evidence E source
  1 bun-size or griller link 75 g; quantity not specified 60 g; 1 cubic inch 15 g

What your body absorbs

• In a 3-day crossover feeding trial in 12 adults, pepper alkaloids such as piperine from salami were absorbed and showed up in urine and blood. — 12 healthy volunteers, 3 consecutive days per meat type (n = 12) Evidence B source
  9 urinary and 5 plasma pepper alkaloid metabolites discriminated salami intake; serum piperine tracked habitual sausage intake in 418 EPIC participants

What cooking and storage change

• Lab studies on dry-fermented sausages show that cutting or replacing salt raises moisture, water activity and tyramine content. — 43 articles with 99 sausage-making experiments (n = 99 experiments) Evidence D source
  Salt reduction/replacement increased moisture, water activity, lactic acid bacteria and tyramine; Enterobacteriaceae did not grow

What it does to your health

• In a 12-week RCT of 113 healthy adults, a meat-based diet raised a gut DNA-damage marker by about 16% while a pesco-vegetarian diet did not. — 113 healthy adults aged 18-50, 103 completers, 12 weeks free-living (n = 113) Evidence B source
  Fecal water genotoxicity +15.97% DNA damage (95% CI 4.61 to 27.32) after meat-based diet; no significant change with pesco-vegetarian diet
• Pooled cohort data on 1.97 million adults link each extra 50 g a day of processed meat to 15% higher type 2 diabetes risk over a median 10 years. — 1 966 444 adults in 31 cohorts from 20 countries, median follow-up 10 years (n = 1966444) Evidence C source
  HR 1.15 (95% CI 1.11-1.20) per 50 g/day processed meat; I2 59%
• A meta-analysis of 12 cohort and 30 case-control studies linked high sausage intake to 33% higher gastric cancer risk. — participants of 12 cohort and 30 case-control studies (n = 42 studies) Evidence C source
  Sausage RR 1.33 (95% CI 1.16-1.52); processed meat RR 1.45 (1.26-1.65)
• An umbrella review of 54 meta-analyses links each extra 50 g a day of processed meat to 17% higher colorectal cancer risk, with low to very low certainty. — 34 articles with 54 meta-analyses of observational studies (n = 54 meta-analyses) Evidence C source
  +50 g/day: gastric cancer +72%, colorectal cancer +17%, prostate cancer +4%, COPD +8%; GRADE low to very low
• Cohort data on 381 291 adults link one daily serving of processed meat to 0.57 lb (0.26 kg) more weight gain per year. — adults in 3 cohort studies (n = 381 291) (n = 381291) Evidence C source
  +0.26 kg/y per daily serving (95% CI 0.03-0.48; I2 93%); waist +0.14 cm/y (0.02-0.26)
• The Nordic Nutrition Recommendations 2023 review rated evidence as strong that processed meat raises colorectal cancer risk. — qualified systematic reviews by WCRF and IARC and other meta-analyses Evidence C source
  Strong evidence: processed meat and colorectal cancer; probable: CVD mortality and stroke
• UK survey data on 3338 adults link the highest nitrate intake from processed meat to higher systolic blood pressure, unlike nitrate from vegetables. — 3338 UK adults aged 19-64, National Diet and Nutrition Survey years 1-8 (n = 3338) Evidence C source
  Processed-meat nitrate Q4 (1.8-3 mg/d) vs Q1 (0.1-0.8 mg/d): higher SBP (P = 0.010); vegetable nitrate linked to lower SBP

Safety, limits and interactions

• Salmonella was found in 52.6% of 494 grilled and smoked artisanal pork sausages sold in Quindio, Colombia. — 494 ready-to-eat artisanal pork sausage samples, 2017-2022 (n = 494) Evidence C source
  Salmonella in 260 samples (52.6%); smoked barbecue sausages 68.8%
• In 10 years of surveillance of 6830 ready-to-eat meat samples in Montenegro, fermented dry sausages failed Listeria limits in 6.2% of samples. — 6830 ready-to-eat meat product samples, Montenegro, 2016-2025 (n = 6830) Evidence C source
  Overall Listeria detection 38.8%; cooked emulsion products 73.4% detection, 0.8% noncompliance; fermented dry sausages 6.2% noncompliance
• In an Egyptian market survey sausages had the lowest nitrosamine levels, about 2.36 ug/g, far below hot dogs at about 159 ug/g. — processed meat products eaten by 420 hospital night-shift staff, Alexandria (n = 420) Evidence C source
  Nitrosamine: hot dogs 159.24 ug/g, sausages 2.36 ug/g, burgers 2.37 ug/g

Who this works differently for

• CDC advises pregnant women, adults 65 and older and people with a weakened immune system to avoid unheated hot dogs and fermented or dry sausages and eat them reheated to 165°F or until steaming hot. Bratwurst is not named. — people at higher risk of listeriosis: pregnant women, adults 65 and older, people with a weakened immune system Evidence E source
  Avoid unheated deli meat, cold cuts, hot dogs and fermented or dry sausages, eat them reheated to 165°F (74°C) or until steaming hot

The bottom line

The cancer link shows up in the data, and how firm it is depends on who rates it. A meta-analysis of 12 cohort and 30 case-control studies tied the highest sausage intake to a 33% higher risk of stomach cancer (RR 1.33, 95% CI 1.16 to 1.52). That compares top and bottom intake groups and rests mostly on case-control studies, where people recall what they ate after diagnosis. An umbrella review of 54 meta-analyses linked each extra 1.8 oz (50 g) of processed meat a day to 17% more colorectal cancer and 72% more stomach cancer, and graded all of it low to very low certainty. The review behind the Nordic Nutrition Recommendations 2023 called the evidence on processed meat and colorectal cancer strong, even though the reviews it drew on scored critically low on average for quality. In three cohorts with 381 291 adults, one daily serving of processed meat went with 0.57 lb (0.26 kg) more weight gain a year (95% CI 0.03 to 0.48), again at low certainty. In 3338 UK adults, the quarter with the most nitrate from processed meat had higher systolic blood pressure than the lowest quarter, in a single snapshot that cannot show cause. Food safety is the practical caution, and the numbers come from places far from a supermarket bratwurst. Salmonella was found in 52.6% of 494 grilled and smoked artisanal pork sausages bought from food outlets in Quindio, Colombia. In ten years of testing 6830 ready-to-eat meat samples in Montenegro, dry fermented sausages broke the Listeria limit in 6.2% of samples. We have no card on who is most at risk from Listeria or on reheating ready-to-eat sausage, so this page cannot speak to either. In one Egyptian lab survey of local products, sausages held about 2.36 mcg/g of nitrosamines against about 159 mcg/g in hot dogs. We found no studies on bratwurst or sausages in pregnancy or in children. Fresh bratwurst is raw meat, and we have no card giving a safe internal cooking temperature for it, so this page cannot give one.

Sources

1. brwt-r5-01 · food composition dataset
   Bratwurst, pork, cooked, fdc_id 171620: Selenium 39.7 ug | Fatty acids, total saturated 9.998 g | Thiamin 0.459 mg per 100 g
   USDA FoodData Central SR Legacy 2018, Bratwurst, pork, cooked, fdc_id 171620 · checked 2026-10-02
2. brwt-r5-02 · reference dataset
   Bratwurst, FNDDS 25220350, fdc_id 2706174: 1 bun-size or griller link 75 g | 1 cubic inch 15 g | Quantity not specified 60 g
   USDA FNDDS (FoodData Central survey), Bratwurst, food code 25220350, fdc_id 2706174 · checked 2026-10-02
3. brwt-r5-04 · randomized crossover trial
   In a controlled randomized cross-over dietary intervention study, 12 healthy volunteers consume different processed and non-processed meats for 3 consecutive days each. ... Nine and five pepper alkaloid metabolites, including piperine, are identified as major discriminants of salami intake in urine and plasma, respectively.
   Mol Nutr Food Res, 2021 · checked 2026-10-02
4. brwt-r5-10 · meta-analysis of lab experiments
   Pool estimation showed that NaCl reduction and/or replacement in dry-fermented sausages increased moisture, water activity, redness (a* value), lactic acid bacteria count, and tyramine content (P = 0.002, P < 0.001, P = 0.002, P < 0.001, P = 0.001, P = 0.001 and P = 0.001, respectively), but decreased lightness (L* value), the Staphylococci count and the textural parameter resilience (P = 0.012, P = 0.014 and P < 0.001, respectively).
   Meat Sci, 2025 · checked 2026-10-02
5. brwt-r5-03 · randomized controlled trial
   A total of 113 healthy adults (18-50 years) were randomized, and 103 completed the study. ... FW genotoxicity increased significantly after MBD (+ 15.97%DNA damage; 95% CI 4.61 to 27.32; p = 0.006), with no significant within-group changes in MBD-T or PVD.
   Sci Rep, 2025 · checked 2026-10-02
6. brwt-r5-05 · meta-analysis of cohorts
   Greater consumption of each of the three types of meat was associated with increased incidence of type 2 diabetes, with HRs of 1·10 (95% CI 1·06-1·15) per 100 g/day of unprocessed red meat (I2=61%), 1·15 (1·11-1·20) per 50 g/day of processed meat (I2=59%), and 1·08 (1·02-1·14) per 100 g/day of poultry (I2=68%).
   Lancet Diabetes Endocrinol, 2024 · checked 2026-10-02
7. brwt-r5-06 · meta-analysis of observational studies
   Twelve cohort and thirty case-control studies were included in the meta-analysis. Significant associations were found between both red (RR: 1.45, 95% CI: 1.22-1.73) and processed (RR: 1.45, 95% CI: 1.26-1.65) meat intake and gastric cancer risk generally. Positive findings were also existed in the items of beef (RR: 1.28, 95% CI: 1.04-1.57), bacon (RR: 1.37, 95% CI: 1.17-1.61), ham (RR: 1.44, 95% CI: 1.00-2.06), and sausage (RR: 1.33, 95% CI: 1.16-1.52).
   PLoS One, 2013 · checked 2026-10-02
8. brwt-r5-07 · umbrella review
   Dose-response analysis revealed that an increase in PM consumption of 50 g/day was associated with a 72% higher risk of gastric cancer, 17% higher risk of colorectal cancer, 4% higher risk of prostate cancer, and an 8% higher risk of chronic obstructive pulmonary disease (COPD). All the above dose-response associations are based on low to very low certainty evidence as assessed by the GRADE system.
   Front Public Health, 2026 · checked 2026-10-02
9. brwt-r5-08 · meta-analysis of cohorts
   Three studies (n = 381 291) were included in the random-effects model of measured body weight, resulting in a summary increase of 0.26 kg/y per 1 daily serving of processed meat (95% confidence interval [CI], 0.03-0.48; τ2: 0.03; I2: 92.95%).
   Nutr Rev, 2025 · checked 2026-10-02
10. brwt-r5-09 · scoping review
    However, findings from qualified SRs indicate strong evidence that processed meat increases the risk of colorectal cancer and probable evidence that red meat (unprocessed, processed, or both) increases the risk.
    Food Nutr Res, 2024 · checked 2026-10-02
11. brwt-r5-14 · cross-sectional study
    In contrast, there was no difference in CVD risk biomarkers across quartiles of nitrate intake from processed meats, with higher SBP in Q4 (1.8‒3 mg/d nitrate) than Q1 (0.1‒0.8 mg/d) (P = 0.010).
    J Nutr, 2026 · checked 2026-10-02
12. brwt-r5-11 · prevalence survey
    A total of 494 samples of grilled and smoked barbecue artisanal pork sausages were collected at food outlets from 12 municipalities of the Department of Quindío, Colombia, between 2017 and 2022. ... Salmonella spp. was detected in 260 samples (52.6%), and the highest rates of contamination were found in Armenia (65.7%), Salento (65.2%), Circasia (57.7%), and Calarcá (56.4%).
    Pathogens, 2025 · checked 2026-10-02
13. brwt-r5-12 · prevalence survey
    Overall detection was 38.8%, with significant but nonlinear temporal variation (p < 0.001). Cooked emulsion products showed the highest prevalence (73.4%) but minimal noncompliance (0.8%), indicating frequent low-level contamination. Fermented dry sausages exhibited the highest noncompliance rate (6.2%), although decreasing over time (p < 0.001).
    J Food Prot, 2026 · checked 2026-10-02
14. brwt-r5-13 · cross-sectional study
    Results showed that hotdogs contained the highest nitrosamine levels (159.24 ± 87.99 µg/g) with a consumption pattern of 0.02126 µg/kg BW/day. In contrast, sausages and burgers had the lowest nitrosamine content (2.36 µg/g and 2.37 µg/g, respectively).
    Sci Rep, 2025 · checked 2026-10-02
15. sf-lis-r1-4 · agency advice
    You may be at higher risk if you are in one of the following groups: Women who are pregnant ... People who are 65 years or older ... People who have a weakened immune system ... Unheated deli meat, cold cuts, hot dogs, and fermented or dry sausages ... Deli meat, cold cuts, hot dogs, and fermented or dry sausages reheated to 165°F or until steaming hot
    US CDC, Preventing Listeria Infection · checked 2026-10-08