“Air frying reduces the formation of probable carcinogens compared to deep frying.”

• The main 'probable carcinogen' (IARC Group 2A) formed in frying is acrylamide, produced by the Maillard reaction between asparagine and reducing sugars at temperatures above ~120 °C. Air frying uses far less oil and typically shorter high-heat contact with a conductive medium, which experimentally lowers acrylamide yield.
• Sansano et al. (Journal of Food Science, 2015) directly compared hot-air frying with conventional deep-oil frying of potato strips and reported acrylamide reductions of roughly 80–90% under comparable browning conditions.
• Multiple subsequent food-science reviews of air frying report the same direction of effect for starchy foods (potatoes, dough products): lower acrylamide and lower fat uptake than deep frying, because oil acts as an efficient heat-transfer medium that drives surface temperatures and Maillard chemistry harder.
• Deep frying also degrades the frying oil itself over repeated use, generating aldehydes (e.g., acrolein, 4-hydroxynonenal) and polar compounds that are absorbed into food; air frying largely avoids reused-oil degradation products because little or no bulk oil is used.
• Regulators (EFSA, NCI/FDA) advise cooking to a lighter colour and avoiding over-browning to limit acrylamide — a goal that is generally easier to achieve with controlled-temperature air frying than with 170–190 °C oil immersion.

• Air frying does not eliminate the chemistry: it is still a dry, high-heat method, and acrylamide is readily formed in air fryers — at high temperatures or long times, air-fried potatoes can reach acrylamide levels comparable to or exceeding deep-fried ones. The advantage is conditional on temperature/time/browning, not automatic.
• For protein foods, the picture is less favourable. Heterocyclic aromatic amines (HCAs, several classified Group 2A/2B) and polycyclic aromatic hydrocarbons (PAHs, including Group 2A benzo[a]anthracene and the Group 1 benzo[a]pyrene) form on meat and fish surfaces at high dry heat; several studies report that air frying of fish/meat can increase PAHs, HCAs or cholesterol oxidation products relative to deep frying or other methods, because fat drips onto hot surfaces and the surface dehydrates and browns intensely.
• The claim is stated unconditionally ('reduces'), whereas the literature supports 'usually reduces acrylamide in starchy foods, under comparable degrees of browning' — a comparison that depends heavily on the cooking parameters chosen for each method.
• Most comparative data come from small laboratory studies on model foods (potato strips, single fish species) with varied protocols; there is no large body of human exposure or cancer-outcome evidence showing that switching to an air fryer lowers cancer risk.
• Acrylamide's human carcinogenicity remains uncertain: the IARC 2A classification rests largely on animal and mechanistic data, and epidemiological studies of dietary acrylamide and cancer in humans are inconsistent — so the practical health significance of the reduction is debated.

80/100 — the lab’s own confidence in the score above, not a second reading of the claim.

IARC / World Health Organizationgov · 97 · US National Cancer Institutegov · 95 · European Food Safety Authority (EFSA Journal 2015;13(6):4104, Scientific Opinion on acrylamide in food)journal · 95 · European Food Safety Authoritygov · 93 · Journal of Food Science (Sansano et al., 'Effect of Pretreatments and Air-Frying, a Novel Technology, on Acrylamide Generation in Fried Potatoes')journal · 88 · Cleveland Clinicedu · 80 · US National Cancer Institute (HCAs and PAHs in cooked meats)gov · 95

• Acrylamide is the key “probable carcinogen” here: the National Cancer Institute says acrylamide is classified by IARC as “probably carcinogenic to humans” and forms in some carbohydrate-rich foods during high-temperature cooking, especially frying, roasting, and baking. That makes fried potatoes a directly relevant test case for the claim.
• A controlled Journal of Food Science study comparing French fries made in an air fryer versus a deep-oil fryer found substantially lower acrylamide formation in the air-fried fries—reported at about 90% lower under the study’s conditions—supporting the claim for a common high-acrylamide food category.
• FDA and EFSA both identify high-temperature frying of plant-based foods, particularly potatoes, as a major acrylamide-forming process. Because air frying generally uses hot circulating air with little or no immersion oil and can achieve similar browning with different heat/oil exposure, the mechanism is plausible and supported by the potato-frying data.

• The claim is somewhat broad. FDA, NCI, and EFSA note acrylamide can form in foods cooked by many high-temperature methods, including baking and roasting as well as frying; air frying does not eliminate acrylamide and over-browned air-fried foods can still contain it.
• The best direct evidence is strongest for starchy foods such as French fries and acrylamide. It is less certain as a blanket statement for every food and every “probable carcinogen.” For meats, NCI says high-temperature cooking can form heterocyclic amines and polycyclic aromatic hydrocarbons; appliance choice alone is not the only determinant—temperature, time, doneness, and charring matter.
• Results depend on recipe, food thickness, temperature, cooking time, and target browning. If air frying requires longer high-temperature exposure or produces very dark browning, the reduction may be smaller or not apply. The evidence is mainly about formation of chemical contaminants, not direct human cancer outcomes from using air fryers.

78/100 — the lab’s own confidence in the score above, not a second reading of the claim.

Journal of Food Science / PubMedjournal · 88 · National Cancer Institutegov · 95 · U.S. Food and Drug Administrationgov · 95 · European Food Safety Authoritygov · 95 · National Cancer Institutegov · 94

• Acrylamide is a chemical compound that forms in starchy foods during high-temperature cooking, such as frying, and is classified by the International Agency for Research on Cancer (IARC) as a 'probable human carcinogen'.
• Scientific studies, including research published in the Journal of Food Science, have demonstrated that air frying can reduce acrylamide formation in potatoes by up to 90% compared to traditional deep-fat frying.
• Because air frying uses circulating hot air and significantly less oil than deep frying, it lowers the rapid heat-transfer conditions that heavily drive the Maillard reaction responsible for acrylamide generation.
• Air frying also reduces the risk of consuming polycyclic aromatic hydrocarbons (PAHs) and heterocyclic amines (HCAs), which are other harmful compounds that can accumulate in repeatedly heated deep-frying oil.

• Air frying does not completely eliminate the formation of probable carcinogens. Because the process still relies on high temperatures (often up to 400°F / 200°C), acrylamide and other cooking-related byproducts are still generated, albeit in smaller amounts.
• If food is overcooked or burned in an air fryer, the levels of probable carcinogens can still reach high, harmful concentrations.
• While air frying reduces acrylamide, some research suggests it may increase the formation of cholesterol oxidation products (COPs) in certain animal proteins (like fatty fish) compared to other cooking methods, though these are distinct from the primary carcinogens typically referenced.

95/100 — the lab’s own confidence in the score above, not a second reading of the claim.

Journal of Food Science (via PubMed)journal · 95 · National Cancer Institutegov · 98 · Healthlinenews · 85

• A 2020 peer-reviewed study comparing air-fried and deep-fat-fried chicken found lower acrylamide and total polycyclic aromatic hydrocarbon concentrations in air-fried chicken: acrylamide was not detected to 3.49 μg/kg versus not detected to 6.19 μg/kg for deep-fried chicken, while total PAHs were 1.96–2.71 μg/kg versus 2.64–3.17 μg/kg. The authors concluded that air frying could reduce formation of these potential carcinogens.[https://pubmed.ncbi.nlm.nih.gov/32375322/]
• A 2022 peer-reviewed study of shrimp reported substantially lower oil uptake and cited lower acrylamide formation in air-fried food; it also observed that aldehyde formation increased with frying temperature in both methods.[https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2022.1022590/full]
• FDA states that frying potatoes generally causes more acrylamide formation than roasting or baking, supporting the broader point that cooking conditions and frying intensity affect formation of this process contaminant.[https://www.fda.gov/food/process-contaminants-food/acrylamide-and-diet-food-storage-and-food-preparation]

• A 2024 peer-reviewed study directly comparing home-prepared potatoes found the highest mean acrylamide concentration in air-fried potatoes, 12.19 ± 7.03 μg/kg, compared with 8.94 ± 9.21 μg/kg for deep-fried potatoes; however, the difference was not statistically significant.[https://pmc.ncbi.nlm.nih.gov/articles/PMC10808661/]
• A 2024 peer-reviewed review reports that acrylamide depends strongly on temperature, time, food composition, pretreatment, and operating conditions, and that increasing air-frying temperature and time increases acrylamide. Therefore, air frying is not inherently guaranteed to produce fewer probable carcinogens than every form of deep frying.[https://link.springer.com/article/10.1186/s43014-023-00212-6]
• FDA describes acrylamide as forming during high-temperature cooking such as frying, roasting, and baking, but does not establish that air frying universally reduces human cancer risk or all probable carcinogens relative to deep frying.[https://www.fda.gov/food/process-contaminants-food/acrylamide-questions-and-answers]

92/100 — the lab’s own confidence in the score above, not a second reading of the claim.

PubMed; peer-reviewed study in Food Science and Biotechnologyjournal · 94 · Frontiers in Nutrition; peer-reviewed research articlejournal · 91 · Food Production, Processing and Nutrition; peer-reviewed reviewjournal · 91 · Frontiers in Nutrition; peer-reviewed research articlejournal · 89 · U.S. Food and Drug Administrationgov · 98 · U.S. Food and Drug Administrationgov · 98

• Multiple studies report lower acrylamide in air-fried vs deep-fried potato products under comparable conditions.
• Air frying of meats typically yields lower heterocyclic amines and PAHs than deep frying, linked to less oil and different heat/moisture dynamics.
• Reduced oil volume also limits certain lipid-oxidation products formed during deep frying.

• Both methods use high temperatures that still generate acrylamide, HCAs and related compounds; outcomes vary with time, temperature and food type.
• Drier air-fryer conditions can sometimes enhance Maillard reactions, producing comparable or occasionally higher acrylamide.
• The claim is unquantified and does not address whether lower formation translates to lower human cancer risk.

72/100 — the lab’s own confidence in the score above, not a second reading of the claim.

U.S. Food and Drug Administrationgov · 92 · National Cancer Institutegov · 95