Metabolic & Cardiometabolic
saturated fat decreases lipoprotein(a)
In plain terms: Does eating more saturated fat lower your Lp(a), and does a low-fat DASH diet raise it?
Part of: 🔍 Saturated fat
Yes within trials: lowering saturated fat reliably nudges Lp(a) up (DASH-style feeding raised it ~30%), an effect driven mainly when carbs or trans fats replace the fat, while swapping in unsaturated oils leaves Lp(a) roughly unchanged.
📅 Last reviewed: 2026-07-14 ⓘ
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: All trials, pooled (Meta-analysis)
How the studies fall
What the evidence shows
<!-- vault-context --> Norwitz affirms this claim. Consensus below reflects independent literature only.
The evidence (7)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Enkhmaa 2020 · Nutrients | observational | mixed | low | Review of 7 trials finds replacing saturated fat with carbohydrate or unsaturated fat inconsistently raises Lp(a) even as it lowers LDL-C, a divergent but heterogeneous effect. |
| Jang Y 2026 · J Lipid Atheroscler | observational | mixed | moderate | Korean Society of Lipid and Atherosclerosis Lp(a) Task Force position paper states Lp(a) is a genetically determined risk factor with plasma levels 'largely unaffected by lifestyle modification or conventional lipid-lowering therapy.' No di |
| Myagmarsuren 2025 · Nutrients | RCT | supports | moderate | DELTA-1 & DELTA-2 controlled feeding trials: SFA reduction again raised plasma Lp(a) levels and shifted Lp(a) lipid composition (replication in two more cohorts). |
| Nuotio 2024 · Atherosclerosis | RCT | mixed | moderate | In 118 men, ALA and LA unsaturated-oil diets modestly LOWERED Lp(a) (-7 to -9%); shows the Lp(a) rise is specific to carb/transfat replacement, not all low-SFA diets. |
| Tindall 2020 · J Nutr | RCT | tested-null | low | Crossover (n=34): replacing SFA with walnut/vegetable-oil unsaturated fat lowered LDL-C with NO increase in Lp(a), contradicting a universal low-SFA->Lp(a)-rise. |
| Law 2023 · J Lipid Research | RCT | supports | high | GET-READI crossover, 166 African Americans: cutting SFA 16%->6% (DASH) raised median Lp(a) 44->58 mg/dl (P<0.0001) while lowering LDL-C. |
| Riley 2024 · Am J Clin Nutr | meta-analysis | supports | high | Meta of 27 RCTs/1,325: lower-SFA diets raised Lp(a) (SMD0.14); effect significant when SFA replaced by carbs or trans fat, null for MUFA/PUFA swaps. |
Disagree, or know a study we missed?
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Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.