Client presented with symptoms of depression and anxiety and later was given a diagnosis of chronic PTSD. Client improved significantly with psychotherapy but would present some weeks with elevated levels of anxiety such as feeling overwhelmed. She consistently complained of cognitive issues, such as forgetfulness and of feeling fatigued.

After psychoeducation regarding diet and symptoms, she agreed to try a ketogenic diet to improve her mental health. After adaptation client reported having more energy and feeling less overwhelmed. She reported being able to think and remember better.

Functioning improved both in work and personal environment. Client is thriving in a new long-term relationship, was able to make an important job change, and uses diet consistently to help her maintain her mood and feelings of well-being. – Middle-aged, female; Chronic PTSD