L’ESSENTIEL
- An online ketogenic diet program reduced symptoms of depression and anxiety in 12 weeks.
- The “keto” diet relies on a drastic reduction in carbohydrates, compensated by a high consumption of fats and a moderate intake of protein.
- It optimizes brain energy by using fats rather than sugars.
New evidence suggests that what we eat can have a tangible impact on our brain health and mental wellbeing. A recent British study, published in the journal Frontiers in Nutrition, indicates that a structured ketogenic diet, even when followed remotely, may significantly reduce symptoms of depression, and anxiety.
“Keto” Diet: Fewer Symptoms of Depression and Anxiety
Researchers at the University of East London investigated a ketogenic metabolic therapy (KMT) delivered online. “Traditional treatments like antidepressants and psychotherapy are essential, but they often focus on managing symptoms,” explained lead author Erin Bellamy in a statement. She and her team aimed to evaluate the effects of dietary change.
The results showed that in a group of 19 adults experiencing various mental health challenges, the 4- to 12-week program led to a 62% reduction in depressive symptoms (average score decreasing from 13 to 5) and a 46% decrease in anxiety (from 13 to 7). Notably, 8 participants achieved remission for depression, and 9 for anxiety. All participants completed the program, and no serious adverse events were reported. “This new metabolic approach, accessible remotely, could be a game-changer,” Bellamy stated.
The ketogenic, or “keto,” diet involves a substantial reduction in carbohydrates – sugars, starches, and legumes – balanced with a high intake of fats (oils, butter, fatty fish, avocados) and moderate protein (eggs, cheeses, fish, meats). When deprived of glucose, the body shifts its fuel source, burning fats – which become the primary calorie source – to produce ketones, used in place of sugar to power the brain. Researchers believe this energy shift may improve brain function by optimizing energy availability for neurons. This finding adds to the growing body of research exploring the gut-brain connection and the role of diet in mental health.
Dietary Change Requires Medical Guidance
Historically used to treat epilepsy, the ketogenic diet is now attracting attention from psychiatrists as a potential therapy for conditions like depression, bipolar disorder, and schizophrenia. However, researchers caution that “larger trials are needed to assess the durability of these results,” according to Erin Bellamy. The long-term goal is to integrate this nutritional approach into healthcare systems and conventional treatments, potentially easing the burden on hospitals and psychiatric services.
Patients should exercise caution as the “keto” diet is highly restrictive and carries a risk of nutritional deficiencies if not properly tailored to the individual. Medical supervision is therefore essential before starting the diet.
