03/28/2026
Does using olive oil instead of butter, margarine, mayo and dairy fat make you less likely to die?
This study suggests the answer is
YES!
"Higher olive oil intake was associated with lower risk of total and cause-specific mortality. Replacing margarine, butter, mayonnaise, and dairy fat with olive oil was associated with lower risk of mortality."
Total and cause-specific mortality among 60,582 women (Nurses’ Health Study, 1990-2018) and 31,801 men (Health Professionals Follow-up Study, 1990-2018) who were free of cardiovascular disease or cancer at baseline. Diet was assessed by a semi-quantitative food frequency questionnaire every 4 years.
Data analysis on total and cause-specific mortality among 60,582 women (Nurses’ Health Study, 1990-2018) and 31,801 men (Health Professionals Follow-up Study, 1990-2018) were followed every 4 years with a semi-quantitative food frequency questionnaire. On the 28 years of follow-up they found that those with a higher olive oil intake was associated with 19% lower risk of cardiovascular disease mortality, 17% lower risk of cancer mortality, 29% lower risk of neurodegenerative disease mortality, and 18% lower risk of respiratory disease mortality. In substitution analyses, replacing 10g/d of margarine, butter, mayonnaise, and dairy fat with the equivalent amount of olive oil was associated with 8-34% lower risk of total and cause-specific mortality.
Olive oil consumption has been shown to lower cardiovascular disease risk, but its associations with total and cause-specific mortality are unclear. To evaluate whether olive oil intake is associated with total and cause-specific mortality in two ...