Fresh Produce (photo by Scott M. Liddell, courtesy of morguefile.com)

Diets that very low in carbohydrates are often recommended for weight loss, but little is known about the long term effects on mental health. Recent research conducted in Australia found that despite similar weight loss from low carb and low fat diets, and rapid improvements in mood during the first eight weeks with both, over the long term the mood of those on low carb diets regressed to their original state. The positive effect on mood was maintained for those on low fat diets.

The results of the study were published in the Archives of Internal Medicine. In the article’s introduction it was noted that “…the obesity epidemic has led to widespread interest in alternative dietary patterns for weight management, including very low-carbohydrate ‘ketogenic’ diets that are typically high in protein and fat (particularly saturated fat).”

Mood was assessed using three questionnaires that measure six separate aspects of mood, including tension-anxiety, depression-dejection, anger-hostility, vigor-activity, fatigue-inertia, and confusion-bewilderment. The scientists also looked into the effects of the two diets on cognitive functions, e.g. working memory and speed of processing, but “there was no statistically significant difference between groups.”

The researchers wrote,

Despite these results, it is important to note that mood state scores on average for both groups at baseline and throughout the study remained within the normal range for healthy adults. Consequently, the present findings are limited to healthy, obese, young to middle-aged adults with normal mood state and cannot be generalized to clinical populations.

What to Eat?

Dieticians tend to agree that if you want to slim down and then maintain the weight loss the empty calories from refined sugar and bleached flour are best kept to a minimum, but eating whole grain foods will improve your health.

Omnivores who work more vegetarian meals with lots of fresh fruit and vegetables into their regular diets will enjoy better health. Doing so on a large scale will reap environmental benefits as well and purchasing produce in season can keep costs down.

Fast food, Junk food, highly processed foods and sodas containing high fructose corn syrup are not recommended for good health or the health of the planet. When you combine a healthy diet with regular exercise it’s a near certainty that you will look and feel better.

To view the full text of the article in the Archives of Internal Medicine cited above go to: Long-term Effects of a Very Low-Carbohydrate Diet and a Low-Fat Diet on Mood and Cognitive Function

To view all the previous posts on weight control on the American Feast web site (just scroll down) go to: American Feast's Weight Control Archive

To follow American Feast on Facebook go to: American Feast on Facebook

To follow American Feast's Founder on Twitter go to: Jeff Deasy on Twitter

For information related to the purchase of advertising space and editorial coverage on the American Feast web site call Jeff Deasy toll free at 877-332-7875 or email him at jdeasy@americanfeast.com