Blood lipid profile
Research suggests LDL cholesterol falls when saturated animal fats such as lard are replaced with unsaturated plant oils, one of the more consistent findings in controlled feeding research. The evidence is about the substitution; lard sits between butter and liquid oils on that spectrum rather than at either end.
Moderate evidence. Several human studies point the same way, with real caveats.
4 sources
- Impact of dietary cholesterol from eggs and saturated fat on LDL cholesterol levels: a randomized cross-over study.(opens in a new tab)
Randomised controlled trial · The American journal of clinical nutrition · 2025 · PMID 40339906
- Reduction in saturated fat intake for cardiovascular disease.(opens in a new tab)
Meta-analysis · The Cochrane database of systematic reviews · 2020 · PMID 32428300
- Re-evaluation of the traditional diet-heart hypothesis: analysis of recovered data from Minnesota Coronary Experiment (1968-73).(opens in a new tab)
Meta-analysis · BMJ (Clinical research ed.) · 2016 · PMID 27071971
- Reduction in saturated fat intake for cardiovascular disease.(opens in a new tab)
Meta-analysis · The Cochrane database of systematic reviews · 2020 · PMID 32827219
Deep research mode adds each paper’s own conclusion and stated limitations.