Alternative Health Blog

In a randomized study involving 106 overweight and obese subjects (mean BMI: 33.7), adherence to an energy-restricted, low-fat, high-carbohydrate diet for a period of 1 year was found to be more beneficial to mood and overall psychological health, as compared to adherence to an isocaloric, energy-restricted very low-carbohydrate, high-fat diet for 1 year. Over the course of 1 year, the weight loss (13.7 kg) was not significantly different between the 2 groups. On the other hand, psychological mood states (scores on Spielberger State Anxiety Inventory, Beck Depression Inventory, Profile of Mood states, total mood disturbance, anger-hostility, confusion-bewilderment, depression-dejection) were more significantly improved in subjects adhering to the low-fat diet, as compared to the low-carb diet. Similar effects on working memory and speed of processing were found between the 2 groups. These results suggest that long-term adherence to a low-fat diet may be more beneficial to psychological health than long-term adherence to a low-carbohydrate diet.
 
Reference:
“Long-term effects of a very low-carbohydrate diet and a low-fat diet on mood and cognitive function,” Brinkworth GC, Buckley JD, et al, Arch Intern Med, 2009; 169(20): 1873-80.