Research

Hormonal

Ketogenic diets increase LDL cholesterol and total cholesterol, which may accelerate atherosclerosis and increase cardiovascular disease risk, despite improving triglycerides and HDL.

Monitor your LDL cholesterol closely when starting a ketogenic diet. While your triglycerides may drop and HDL rise, your LDL may increase significantly. If you have a history of cardiovascular disease or high baseline LDL, consult your provider, as this increase may pose a risk. Consider shifting fat sources to plant-based options (nuts, vegetables) to potentially mitigate LDL elevation.

GoodSupportsHIGH confidence
Also, participants following a very-low-carbohydrate ketogenic diet (VLCKD) had a significantly greater increase in low-density lipoprotein cholesterol (LDL-C) levels when compared to participants following a low-fat diet (LFD)... This increase in LDL-C may subsequently lead to the development of accelerated atherosclerosis and increases the risks associated with CVD.
Jennifer T Batch et al. · Cureus · 2020

Why this rating

Supported by multiple meta-analyses cited in the review showing consistent LDL increases.

Source

Advantages and Disadvantages of the Ketogenic Diet: A Review Article

Jennifer T Batch et al. · Cureus · 2020

DOI 10.7759/cureus.9639

narrative_reviewCited 177×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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