Every study we read on this question

Trials in people (5)

• Trial in 458 men: safflower oil instead of saturated fat led to more deaths
  Randomized trial2013458 peoplePoints to harm
• 4-week trial in 30 adults: hemp did not clearly change blood fats or sugar
  Randomized trial202630 peopleNo difference
• 8-week trial in 42 adults found no clear inflammation difference, cottonseed versus olive oil
  Randomized trial202442 peopleNo difference
• 3-month trial in 90 women: no clear weight difference across soybean, olive, camellia oils
  Randomized trial202290 peopleNo difference
• 10-week trial in 61 adults: omega-6 oils gave less liver fat than butter fat
  Randomized trial201261 peoplePoints to benefit

Population studies (2)

• Study of 15,203 UK people found mixed links between omega-6, omega-3 fats and inflammation
  Population study: followed a group202515,203 peopleMixed
• Study of 135,335 adults: polyunsaturated fat linked to lower death risk, not heart attacks
  Population study: followed a group2017135,335 peopleMixed

Reviews (3)

• Review of 48 studies: canola and olive oil lowered cholesterol, coconut oil raised it
  Systematic review2024Points to benefit
• Pooled review of 884 trials: omega-6 supplements were among those lowering heart risk factors
  Pooled review (meta-analysis)2022883,627 peoplePoints to benefit
• Pooled review of 15 trials: less saturated fat cut heart events by 21%
  Pooled review (meta-analysis)202059,000 peoplePoints to benefit

Opinion (3)

• Review: higher linoleic acid levels linked to lower heart disease, stroke and diabetes risk
  Opinion or narrative review2024Points to benefit
• Review: moderate linoleic acid intake linked to lower heart disease risk in long-term studies
  Opinion or narrative review2021Points to benefit
• Review: higher omega-6 intake linked to lower heart disease risk in long-term studies
  Opinion or narrative review2018Points to benefit