Other Applications
The ketogenic diet may be a successful treatment for several rare metabolic diseases. Case reports of two children indicate that it may be a possible treatment for astrocytomas, a type of brain tumour. Autism, depression, migraine headaches, polycystic ovary syndrome and type 2 diabetes mellitus have also been shown to improve in small case studies. There is evidence from uncontrolled clinical trials and studies in animal models that the ketogenic diet can provide symptomatic and disease-modifying activity in a broad range of neurodegenerative disorders including amyotrophic lateral sclerosis, Alzheimer's disease and Parkinson's disease, and may be protective in traumatic brain injury and stroke. Because tumour cells are inefficient in processing ketone bodies for energy, the ketogenic diet has also been suggested as a treatment for cancer. As of 2008, there is insufficient evidence to support the use of the ketogenic diet as a treatment for these conditions; however, clinical trials for many of them are ongoing.
In March 2009, caprylidene (Axona) was approved as a medical food by the US Food and Drug Administration for the "dietary management of the metabolic processes and nutritional requirements associated with mild to moderate Alzheimer's disease". Glucose metabolism by the brain is impaired in Alzheimer's disease, and it is proposed that ketone bodies may provide an alternative energy source. Caprylidene is a powdered form of the MCT caprylic triglyceride.
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