The Study
Dietary fatty acids and mortality risk from heart disease in US adults: an analysis based on NHANES
This study watched a big group of people over many years to see who died from heart disease and what they ate. It found that people who ate more 'good fats' (PUFAs) were less likely to die from heart problems, but it can't prove that the fats caused the difference — other habits might be involved.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
This study looked at what people ate and whether they died from heart disease over time.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 552 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, this matters—eating more polyunsaturated fats could help prevent heart disease in healthy people.
- 2People who got 5% more of their calories from healthy fats (like nuts and fish) had 9% fewer heart deaths.
- 3This was true for people without past heart attacks.
- 4Eating more saturated or monounsaturated fats didn’t change heart death risk.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Scientific Reports
Year
2023
Authors
Yutang Wang, Yan Fang, P. Witting, F. Charchar, C. Sobey, G. Drummond, J. Golledge
Related Content
Claims (6)
Eating a bit more healthy fats like those in nuts and fish might help lower the chance of dying from heart disease — especially if you've never had a heart attack before.
If you've already had a heart attack, eating more healthy fats like those in fish or nuts might not help you live longer — at least that's what one study found in American adults.
Eating more healthy fats like those in fish and nuts might help improve your cholesterol levels—lowering the bad kind and raising the good kind—if you're a US adult who hasn't had a heart attack.
Eating lots of fruits and veggies, some lean meats, and a good mix of healthy fats might help you feel better and live longer.
Eating more monounsaturated fats — like those in olive oil or nuts — doesn’t seem to change your chances of dying from heart disease, at least in US adults when other lifestyle factors are accounted for.
Eating saturated fat doesn’t seem to increase the risk of dying from heart disease in American adults, even after tracking over 45,000 people for many years — so cutting back on saturated fat alone might not help you live longer.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.