Mark Friedman

Emeritus Faculty


Member Emeritus, Monell Chemical Senses Center


Ph.D., Physiological Psychology; Princeton University

Research Summary

My research is directed at the bodily mechanisms that control eating behavior. The focus is on identifying those changes in energy metabolism that serve as signals controlling food intake and characterizing how these signals are detected and transmitted to the brain. This work has implications for understanding the behavioral contribution to energy balance and for treating disturbances in food intake and appetite.


appetite, energy metabolism, liver, obesity, feeding behavior

Representative Publications

Friedman, M.I.; Appel, S. (2019) Energy expenditure and body composition changes after an isocaloric ketogenic diet in overweight and obese men: A secondary analysis of energy expenditure and physical activity. PLoS ONE, 14,

Ludwig, D.S.; Friedman, M.I. (2010) Increasing adiposity: consequence or cause of overeating?  JAMA, 311, 2167-2168.

Ji, H.; Friedman, M.I. (2008) Reduced hepatocyte fatty acid oxidation in outbred rats pre-screened for susceptibility to diet-induced obesity. International Journal of Obesity, 32, 1331-1334.

Friedman, M.I. (2008) Food intake: Control, regulation and the illusion of dysregulation. In: Harris, R.; Mattes, R. (Eds) Appetite and Food Intake: Behavioral and Physiological Considerations, Boca Raton: CRC Press, 1-19.

Friedman, M.I. (2007) Obesity and the hepatic control of feeding behavior. Drug News & Perspectives, 20, 573-578.

Ji, H.; Friedman, M.I. (2007) Reduced capacity for fatty acid oxidation in rats with inherited susceptibility to diet-induced obesity. Metabolism, 56, 1124-1130.

Mark Friedman

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