Diets
Does a very-low-carb diet lower blood-fat triglycerides?
The claim, precisely: ketogenic diet decreases triglycerides
Strong support Diets
RefutedContestedStrong support
consensus score 0.62
Yes — well-supported, though the same diet often raises "bad" cholesterol.
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)
MechanismIn-vitroAnimalObservationalRCTMeta-analysis
How the studies fall
2 support 0 contradict 0 tested null 1 mixed · 3 sources, 2 independent groups
What the evidence shows
Ketogenic/low-carb diets lower triglycerides and raise HDL - the genuine lipid wins (offset by the LDL/ApoB rise).
The evidence (3)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Cannarella 2025 2025 · Reprod Biol Endocrinol | meta-analysis | supports | moderate | VLEKT improved metabolic outcomes incl. TG in PCOS |
| Feng 2025 2025 · Am J Clin Nutr | meta-analysis | mixed | high | carb-restricted diets lower TG but cardiovascular/body-comp effects mixed |
| Zhao (53-RCT MA) 2026 · (MA) | meta-analysis | supports | high | MA 53 RCTs: TG -22.3 mg/dL, HDL +3.5 mg/dL |
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.