In a yearlong study, about one hundred men and women were randomly assigned to eat either a low-carb or high-carb diet. By the end of the year, the subjects eating the high-carb diets experienced significantly less depression, hostility, and mood disturbance than those in the low-carb group. This result is consistent with studies finding better moods and less anxiety among populations eating diets higher in carbohydrates and lower in fats and protein.
