解説が簡潔で大変わかりやすいです。 出典は、Nutrition誌　Volume 124, August 2024, 112420

Ketogenic diet has a positive association with mental and emotional well-being in the general population – ScienceDirect

結論

A ketogenic diet was associated with higher self-reported mental and emotional well-being behaviors, including calmness, contentedness, alertness, cognitive and emotional stress, depression, anxiety, and loneliness, compared with individuals on a non-specific diet in a general population.