Reference summary — not medical advice or a personal risk estimate.
High-temperature cooked meat (HCAs and PAHs)
Quick answer
Classified as Group 2A — probably carcinogenic, based on limited evidence in humans, alongside stronger evidence in animals. Eaten. Compounds that form when meat (beef, pork, chicken, fish) is cooked at very high temperatures — especially grilled over open flame, pan-fried until well-done, or barbecued.
Summary
Meat charred, grilled, or pan-fried at very high temperatures forms compounds that cause cancer in animals; human evidence is suggestive but not yet sufficient.
Detail
Heterocyclic amines (HCAs) and polycyclic aromatic hydrocarbons (PAHs) form when muscle meat is cooked at high temperatures, especially grilling over an open flame. Both are mutagenic in laboratory studies. Population studies have not established a definitive link with typical dietary intake, but high consumption of well-done, fried or barbecued meat has been associated with increased colorectal, pancreatic and prostate cancer risks. IARC classifies frying emissions as Group 2A.
What's not established
This classification reflects limited evidence in humans, often paired with stronger evidence in animals. It does not establish how strong the human evidence would look on its own, a safe exposure threshold, or your personal risk from a given level of exposure.
Regional relevance
global
Documented in these products
Presence in a product category doesn't imply the product causes cancer. Click each to see the source and context.
Evidence sources
Every claim on this page traces back to one of these. Click through to read the primary document yourself.
Primary sources
NCI
NCI — Chemicals in Meat Cooked at High Temperatures
IARC
IARC Monographs — Classifications by Cancer Site, Vols 1–140
Supporting sources
ACS
ACS — Known and Probable Human Carcinogens
NTP
NTP — Report on Carcinogens (US National Toxicology Program)
WCRF/AICR
WCRF/AICR — Diet, Nutrition, Physical Activity and Cancer: a Global Perspective (Third Expert Report)
WCRF/AICR
WCRF — Cancer Prevention Recommendations
Last reviewed: October 2026
Official reference list
A government list some readers use alongside the primary evidence. Meyron is not affiliated with it. A chemical being listed does not by itself describe a risk from any particular product.
- California Prop 65 list
State of California's list of chemicals known to cause cancer or reproductive harm.