Hemp oil already had tiny amounts of certain unhealthy trans fats, but heating it didn’t make any more of them.
Scientific Claim
Low levels of two pre-existing trans fatty acids (trans-9 elaidic acid and linolelaidic acid) were detected in hemp seed oil, but no new trans fatty acids were formed during heating at temperatures up to 230°C for up to 3 hours.
Original Statement
“Two trans fatty acids (trans-9 elaidic acid, linolelaidic acid) were detected at low levels in the oils, and no generation of new trans fatty acids was observed following the heating process.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design cannot support claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The claim uses precise, observational language ('were detected', 'no generation... was observed') matching the abstract. It avoids causal or prescriptive language. The study design cannot prove absence of risk, but this statement only reports what was measured.
Evidence from Studies
Supporting (1)
Effect of cooking temperature and time on the quality and safety of hemp seed oil.
The study found that hemp oil already had tiny amounts of two types of unhealthy fats before cooking, but cooking it at high heat for a long time didn’t make any new ones.