The Study
A pilot study examining a ketogenic diet as an adjunct therapy in college students with major depressive disorder
This study watched 16 students eat a special diet and noticed they felt better and lost weight. But we don’t know if the diet made them feel better — maybe they just felt happier because they were being watched or got extra help from counselors. It’s like noticing your phone battery lasts longer after you turn off apps — but you didn’t test it against your old phone to be sure.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
A group of college students who were feeling really down tried eating a special low-carb, high-fat diet for a few months — and many of them felt much better.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 547 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1These changes are big enough to matter in real life — people went from moderate depression to mild or none, lost noticeable fat, and improved memory and thinking speed without trying to diet or exercise.
- 2Depression scores dropped by 69–71%, body fat dropped by 13%, brain chemical BDNF went up 32%, and leptin (a hunger hormone) dropped 52%.
- 3They also got faster at thinking tasks.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Translational Psychiatry
Year
2025
Authors
Drew D. Decker, R. Patel, Jennifer Cheavens, Scott M. Hayes, Whitney Whitted, Ann J. Lee, Alex Buga, Bradley T. Robinson, Christopher D. Crabtree, Madison L. Kackley, Justen T Stoner, Teryn N Sapper, Ashwini Chebbi, Jeffrey S Volek
Related Content
Claims (6)
Among young adults diagnosed with major depressive disorder, 73 out of 100 people reached a state of nutritional ketosis after following a well-formulated ketogenic diet for 10 to 12 weeks.
Among young adults diagnosed with major depressive disorder, following a ketogenic diet for 10 to 12 weeks without reducing calorie intake resulted in a 13.0% decrease in fat mass and a 6.2% decrease in total body weight.
In young adults with major depressive disorder, following a ketogenic diet for 10–12 weeks is associated with a 32% rise in brain-derived neurotrophic factor and a 52% drop in serum leptin.
Young adults with major depressive disorder who followed a ketogenic diet for 10–12 weeks while receiving standard counseling or medication showed a 69% decrease in self-reported depressive symptoms, a 71% decrease in clinician-rated symptoms, and improvements in global well-being, body fat mass, and cognitive processing speed.
Young adults with major depressive disorder who followed a ketogenic diet for 10 to 12 weeks showed measurable improvements in processing speed and episodic memory on standardized cognitive tests.
Current scientific evidence does not support the conclusion that ketogenic diets lead to better thinking, daily functioning, or overall well-being in people with depression.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.