Therapeutic effects of ketogenic diets on physiological and mental health

Ketogenic diets are emerging dietary patterns that have demonstrated potential as therapeutic tools in a variety of symptoms and conditions, such as epileptic seizures, diabetes, obesity, cancer, migraines, and metabolic syndrome. This narrative review examines the therapeutic effects of ketogenic diets on physiological and mental health, including their role in modulating the gut microbiome. Ketogenic diets promote weight loss, enhance insulin sensitivity, and may lower dyslipidemia, which are crucial factors in preventing cardio-metabolic diseases. They also play a significant role in the composition and function of the gut microbiome, serving as a therapeutic approach to control autoimmune diseases, given their effectiveness in reducing pro-inflammatory cells. Conversely, a potential downside of these diets is the decrease in beneficial bacteria that have been positively associated with human health. Regarding mental health, ketogenic diets have the capability to stabilize neural networks, improve neuroplasticity, and exert direct benefits in brain bioenergetics, thereby potentially alleviating the symptoms related to several mental conditions, such as epilepsy, anxiety, depression, schizophrenia, bipolar disorder, autism spectrum disorder, and certain neurodegenerative diseases. However, more randomized, long-term studies are required to assess their efficacy, sustainability, and safety, including methodological rigor to strengthen findings on dietary impacts.