A new study claims ketogenic diets cause liver damage and early death. Here’s what you need to know.
A 2025 mouse study recently made headlines, warning that ketogenic diets may lead to fatty liver, high triglycerides, and a shortened lifespan.
But here’s the catch:
These findings were in genetically altered mice fed a 90% fat diet, filled with highly synthetic components, and they contradict what human trials have shown again and again.
In real people, ketogenic diets have consistently been linked to:
✅ Lower liver fat and improved liver enzymes
✅ Reduced triglycerides
✅ Improved insulin sensitivity and A1c
✅ Medication reduction or even remission in type 2 diabetes
So why the disconnect?
In this video, Dr. Bret Scher breaks it down:
– What the mouse study really showed (and what it didn’t)
– Key biological differences between mice and humans
– Why human evidence still supports a well-formulated ketogenic diet’s safety and benefits
– What to look for when evaluating nutrition headlines
Animal data can provide hints and raise important questions, but when human trials show clear benefits, that’s the signal we should trust.
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*Expert Featured:*
Dr. Bret Scher
– Baszucki Group Medical Director
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*Resources Mentioned:*
*A long-term ketogenic diet causes hyperlipidemia, liver dysfunction, and glucose intolerance from impaired insulin secretion in mice*
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Metabolic Mind is a non-profit initiative of Baszucki Group working to transform the study and treatment of mental disorders by exploring the connection between metabolism and brain health. We leverage the science of metabolic psychiatry and personal stories to offer education, community, and hope to people struggling with mental health challenges and those who care for them.
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