Even though we are conditioned to love and even rely upon the fat-filled, sugar and carb overload we experience from many unhealthy foods, we are not intrinsically bound into this cycle: It is possible to alter the brain's reaction to unhealthy foods through changes in diet and education, according to a new study published on Monday in Nutrition & Diabetes.
According to study co-contributor Susan B. Roberts Ph.D. in their Monday press release, "
We don't start out in life loving French fries...This conditioning happens over time in response to eating - repeatedly! - what is out there in the toxic food environment."Scientists have long theorized that over a lifetime of eating these toxic foods, we form unhealthy food addiction circuits in the brain that are difficult to reverse or break, leading to a lifetime of junk food cravings and long-term consequences like sickness and obesity.
To examine whether it is possible to break unhealthy food addiction patterns in the brain, a Tufts University research team employed magnetic resonance imaging (MRI) brain scans to study the brain's reward centers in 13 overweight and obese men and women. Eight of the study members participated in a six month weight loss program "specifically designed to change how people react to certain foods," incorporating several features like behavioral weight management education and high-fiber, low-glycemic menu plans, recipe suggestions and tip sheets. Five of the study participants served as the control group and did not receive any weight loss programming.
Comment: Additional examples of 'unhealthy food addiction patterns in the brain':
- Junk Food as 'Addictive as Drugs'
- Junk Food Junkies: Dying For a Fix
- Junk Food Nearly as Addictive as Heroin
- Junk Food Found to Deteriorate Pleasure Center of Brain
- Why We Mindlessly Eat Junk Food - and How to Stop
- How We Became a Society of Gluttonous Junk Food Addicts
- Experts Say: Junk Food Can Hijack Brain Like Drugs Do
- Junk Food-Addicted Rats Chose to Starve Themselves Rather than Eat Healthy Food
All participants underwent MRI scans at the start of the study and at the end of its six-month duration. During the scans they were shown pictures of high calorie foods, low calorie foods, and non-food control images. After six months of weight loss programming, the reward center of the brain had changed significantly in the experimental group, specifically in the areas associated with learning and addiction. The researchers also noted an increased sensitivity to the images of healthier foods, and a decreased sensitivity to the images of higher calorie foods. As expected, the participants in the experimental group also lost significantly more weight than those in the control group.
These preliminary findings indicate that our brain's food addiction pathways are not set in stone, but are flexible through changes in mindful eating and increased food education. Certainly more research needs to be conducted with a larger number of participants, an increased follow-up duration and deeper investigation into the causal mechanisms of change. Furthermore, if lifestyle changes and education can alter the brain's reaction to food, can similar targeted interventions also alter the brain's reactions to other addictive triggers like drugs, alcohol and gambling?
Overall, these results seem to point to the resilience of our minds and bodies to recover from unhealthy lifestyle patterns. Even after years of abuse and neglect, it is never too late to break the cycle and make an active decision to lead a healthier life. And quite amazingly, doing so may actually help heal the addictive or dysfunctional pathways in your brain that kept you trapped in that cycle in the first place!
Resources
Nature [PDF]
Eurekalert.org: Training your brain to prefer healthy foods
Personal experience since changing my diet. I now dislike the taste and texture of bread. Give me lard, ribs and or any thing like that.