Inclusion Criteria:  at least 40 years of age English speakers show a minimum of 5% hepatic triglyceride level on liver imaging have not taken part in a weight loss/dietary intervention within 6 months not currently adhering to a low-carbohydrate diet (e.g., Atkins, Paleo)  Exclusion Criteria:  younger than 40 years of age have a history of neurological disease (e.g. stroke, seizure disorder) psychiatric illness (e.g. schizophrenia, bipolar disorder) harmful alcohol use (AUDIT-C score >5) morbid obesity (BMI>40) MRI contraindications