Turkey bacon: poultry and processed meat at once

Turkey bacon belongs to two categories the evidence treats in opposite ways. It is poultry, the meat category cohorts find least risky, and it is cured processed meat, the category they find most risky. The strongest evidence that touches it is about salt. Across 43 randomised controlled trials run between 1983 and 2024, blood pressure fell step by step as salt intake dropped through three bands, above 15 g a day, 5 to 15 g a day and below 5 g a day. The continuous study-level trend across those trials was not statistically significant, none of them fed turkey bacon, and the authors name residual heterogeneity, exposure measurement error and varying adherence. Not one trial, cohort or composition study in this set names the food itself, so every number below comes from a category it belongs to. The nearest thing to a swap experiment is small. In 20 metabolically healthy men who ate 240 g of red and processed meat a day for 14 days and then the same amount of mycoprotein, total cholesterol fell 6.74 percent and LDL 12.3 percent from baseline on the meat-free arm (both P = 0.02). Those were secondary endpoints of a 14-day crossover in 20 men, and the comparator was mycoprotein rather than a poultry product.

What it does to your health

• In 20 healthy men who ate 240 g of red and processed meat a day for 14 days and then the same amount of mycoprotein, total cholesterol fell 6.74 percent and LDL 12.3 percent on the meat-free arm. — 20 metabolically healthy male adults, 240 g/day of red and processed meat for 14 days against mycoprotein in crossover order (n = 20) Evidence B source
  Total cholesterol -6.74% (P = 0.02) and LDL cholesterol -12.3% (P = 0.02) from baseline on mycoprotein, waist circumference -0.95 cm against meat (P = 0.04), blood pressure changes not significant
• Pooling cohorts with 566 607 people and 4734 colon cancer cases, the highest heme iron intake carried 18 percent higher colon cancer risk (RR 1.18, 95% CI 1.06 to 1.32). — 566,607 individuals with 4,734 colon cancer cases in prospective cohort studies reporting heme iron intake (n = 566,607) Evidence C source
  Relative risk 1.18 (95% CI 1.06 to 1.32) for the highest against the lowest heme iron intake category

Safety, limits and interactions

• Across 43 randomised controlled trials run between 1983 and 2024, blood pressure fell step by step as salt intake dropped from above 15 g a day to below 5 g a day. — participants of 43 randomised controlled trials, salt intake grouped as high above 15 g/day, moderate 5 to 15 g/day and low below 5 g/day (n = 43 trials) Evidence A source
  Graded association across the three intake categories, with larger blood pressure reductions at lower intake; the continuous study-level trend was not statistically significant
• WHO places cured meat of any animal in the strongest carcinogen class it uses, and puts the number behind it on the record: about 18 percent higher colorectal cancer risk for each 50 g eaten daily, pooled from 10 studies. — general population, WHO and IARC position after the 2015 monograph working group (n = 10 studies behind the 18% figure) Evidence E source
  About 18% higher colorectal cancer risk per 50 g of processed meat a day; processed meat is Group 1 and the animal it came from does not change that

What people believe that the data does not support

• In 1.97 million adults, each 50 g of processed meat a day carried 15 percent higher type 2 diabetes risk and each 100 g of poultry 8 percent. — 1,966,444 adults in 31 cohorts across 20 countries, median follow-up 10 years, 107,271 incident cases (n = 1,966,444) Evidence C source
  Hazard ratio 1.15 (95% CI 1.11 to 1.20) per 50 g/day processed meat, 1.10 (1.06 to 1.15) per 100 g/day unprocessed red meat, 1.08 (1.02 to 1.14) per 100 g/day poultry
• The same 31 cohorts found that swapping processed meat for unprocessed red meat or for poultry went with fewer new cases of type 2 diabetes. — 1,966,444 adults in 31 cohorts, modelled substitution of processed meat by unprocessed red meat or poultry (n = 1,966,444) Evidence C source
  Direction only: lower incidence of type 2 diabetes when processed meat is replaced by unprocessed red meat or poultry, no size given in the abstract
• Across 31 observational studies, processed meat went with 65 percent higher risk of colorectal polyps while white meat went with 21 percent lower risk of colorectal adenomas, so the two labels a cured poultry product carries point opposite ways. — adults in 31 observational studies of meat subtypes and precancerous colorectal lesions (n = 31 studies) Evidence C source
  Processed meat and colorectal polyps RR 1.65 (95% CI 1.05 to 2.61), adenomas 1.14 (0.93 to 1.41); white meat and adenomas 0.79 (0.63 to 0.99); charred meat and unprocessed red meat not significant

The bottom line

The belief worth correcting is that choosing the turkey version takes the food out of the processed-meat problem. In 1.97 million adults across 31 cohorts, followed for a median of 10 years with 107 271 new cases, each 50 g of processed meat a day carried 15 percent higher type 2 diabetes risk (HR 1.15, 95% CI 1.11 to 1.20). Unprocessed red meat carried 10 percent per 100 g (1.10, 1.06 to 1.15) and poultry 8 percent per 100 g (1.08, 1.02 to 1.14). Those are observational associations with heterogeneity of 59 to 68 percent, and the poultry estimate weakened under alternative modelling. The same cohorts did find one trade going the right way. Replacing processed meat with unprocessed red meat, or with poultry, went with a lower incidence of type 2 diabetes, and the abstract puts no size on it. The two labels pull against each other in the bowel data as well. Across 31 observational studies, processed meat went with 65 percent higher risk of colorectal polyps (RR 1.65, 95% CI 1.05 to 2.61) and no significant change in adenoma risk (1.14, 0.93 to 1.41). White meat over the same studies went with 21 percent lower adenoma risk (0.79, 0.63 to 0.99). The authors say they could not rule out subclasses inside these meat categories as the real driver, and a cured poultry product is exactly such a subclass. Beside that sits the heme iron work. Pooled cohorts covering 566 607 people and 4734 colon cancer cases put the highest heme iron intake at 18 percent higher colon cancer risk (RR 1.18, 1.06 to 1.32). The mechanism there is proposed rather than shown in people, and none of those cohorts measured the heme content of a cured poultry product. Who should be careful. Anyone watching blood pressure should treat this as a salty food, on the strength of the graded salt evidence above, although no trial has measured what turkey bacon on its own contributes. WHO places cured meat of any animal in Group 1, the strongest carcinogen class it uses, and the number behind that is about 18 percent higher colorectal cancer risk for every 50 g eaten daily, pooled from 10 studies. It is the position of an agency rather than a fresh analysis, and it stands next to the cohort figures above. Fifty grams is about six thin slices as cooked. The animal the meat came from does not change the classification. We found no study of this food and allergy, pregnancy, children or medicines, and nobody has measured what frying or microwaving it does to its nitrosamines or its salt, so neither gap is a clearance.

Sources

1. tbac-r5-02 · randomised crossover controlled trial in humans
   Mycoprotein consumption led to a 6.74% reduction in total cholesterol (P = 0.02) and 12.3% reduction in LDL cholesterol (P = 0.02) from baseline values.
   Eur J Nutr, 2023 · checked 2026-09-24
2. tbac-r5-05 · meta-analysis of prospective cohort studies
   The relative risk of colon cancer was 1.18 (95% CI: 1.06-1.32) for subjects in the highest category of heme iron intake compared with those in the lowest category.
   Cancer Prev Res (Phila), 2011 · checked 2026-09-24
3. tbac-r5-01 · systematic review and meta-analysis of 43 randomised controlled trials
   Across 43 randomized controlled trials (1983-2024), higher amounts of salt intake were associated with higher BP, whereas lower intake was associated with larger BP reductions, demonstrating a graded association across intake categories.
   Nutr Rev, 2026 · checked 2026-09-24
4. tbac-r5-07 · WHO question and answer page, position statement of an international agency
   An analysis of data from 10 studies estimated that every 50 gram portion of processed meat eaten daily increases the risk of colorectal cancer by about 18%.
   Cancer: carcinogenicity of the consumption of red meat and processed meat, WHO questions and answers, World Health Organization · checked 2026-09-24
5. tbac-r5-03 · individual-participant federated meta-analysis of prospective cohort studies
   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 2026-09-24
6. tbac-r5-04 · substitution analysis in a meta-analysis of prospective cohort studies
   Replacing processed meat with unprocessed red meat or poultry was associated with a lower incidence of type 2 diabetes.
   Lancet Diabetes Endocrinol, 2024 · checked 2026-09-24
7. tbac-r5-06 · systematic review and meta-analysis of observational studies
   Processed meat consumption was correlated with increased colorectal polyp risk (1.65; 1.05, 2.61) but not colorectal adenoma risk (1.14; 0.93, 1.41).
   Nutr Rev, 2026 · checked 2026-09-24