The Study
Association between nut consumption and mortality risk: a 20-year cohort study in Korea with a stratified analysis by health-related variables
This study watched a lot of people in Korea for many years and noticed that those who ate more nuts tended to live longer. But it didn’t make people eat nuts — it just watched what they already did. So we can’t say nuts caused them to live longer — maybe they were just healthier in other ways too.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
This study looked at whether eating nuts every week helps people live longer and avoid heart disease or cancer.
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 567 / 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 — eating a small handful of nuts a few times a week may help you live longer, especially if you're older, have a moderate weight, or don't exercise much.
- 2People who ate 2 or more handfuls of nuts a week lived 12% longer on average.
- 3Those who ate 1–2 handfuls a week had 34% less risk of dying from heart disease.
- 4Eating more than 2 handfuls didn't help more.
- 5Nuts didn't lower cancer death risk.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Nutrition Journal
Year
2024
Authors
Hyemin Shin, Jihye Kim, SuJin Song
Related Content
Claims (10)
People who eat nuts have lower rates of death from heart disease and gastric cancer compared to those who do not.
Eating up to 15 grams of nuts per day is associated with the lowest risk of death; eating more than that does not lower the risk further.
Eating nuts does not show a measurable link to the risk of dying from cancer in Korean adults aged 40 to 79, even when accounting for other health and lifestyle factors.
Korean adults aged 40–79 who eat at least two servings of nuts per week have a 12% lower risk of dying from any cause over 12.3 years compared to those who eat fewer servings, after accounting for lifestyle and health factors.
In Korean adults aged 60 and older, eating nuts is linked to a lower risk of death from any cause compared to younger adults.
Eating nuts does not change the risk of dying from cancer in Korean adults aged 40 to 79, regardless of other lifestyle and health factors.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.