Online group food addiction intervention study
Dr. Unwin and coauthors want people with food addiction to be able to access a validated treatment protocol. Their study aimed to evaluate an online group intervention across multiple sites in the United States, Canada, and the United Kingdom, involving an abstinent, low-carbohydrate diet and biopsychosocial education focused on addiction and recovery in people self-identifying as having food addiction.
“Lots of people with food addiction go to GPs who don’t clinically recognize this, or if they attend addiction services and psychiatry, then they tend to only specialize in drugs, alcohol, and gambling. Eating disorder services are linked but their programs mostly don’t work for a food addict,” Dr. Unwin remarked in an interview.
“We feel running groups, as well as training professionals to run groups, is the best way to manage food addiction,” she said, reflecting on the scale of the problem, with around 10% of adults in the U.K. general population considered to have food addiction. In Dr. Unwin’s study, some people had type 2 diabetes and some overweight/obesity, but she added that some participants were underweight or of normal weight.
Initially, the 103 participants received weekly group (8-24 people) sessions for 10-14 weeks, and then monthly maintenance comprising follow-up that involved coaching participants on how to cope with relapse and get back on track.
Food addiction symptoms were assessed pre- and post program using the modified Yale Food Addiction Scale (mYFAS) 2.0; ICD-10 symptoms of food-related substance use disorder (CRAVED); and mental health well-being measured using the short version of the Warwick Edinburgh Mental Wellbeing scale and body weight.
“The program eliminates processed foods with a personalized, abstinence food plan that involves education around mechanisms involved,” said Dr. Unwin, who explained that processed foods deliver a dopamine high, and in response to this, the brain lowers the number of dopamine receptors to effectively counteract the increase in dopamine. This drop in dopamine receptors explains the depression often associated with food addiction.
Dr. Unwin reported that food addiction symptoms were significantly reduced, with the mYFAS dropping by 1.52, the CRAVED score by 1.53, and body weight by 2.34 kg (5.2 lb). Mental health, as measured by the Warwick Edinburgh Mental Wellbeing scale, improved by 2.37 points.
“We were very interested in mental health and well-being because it impacts so much across our lives, and we saw significant improvements here, but we were less interested in weight because food addicts come in all shapes and sizes with some people underweight,” said Dr. Unwin. “Food addiction symptoms were significantly improved in the group, but we now need to look at the longer-term outcomes.”
Dr. Unwin runs a low-carbohydrate program for type 2 diabetes with her husband David Unwin, MD, who is a GP in Southport, England. She said that they ask patients if they think they have food addiction, and most say they do.
“I always try to explain to patients about the dopamine high, and how this starts the craving which makes people wonder when and where they can find the next sugar hit. Just thinking about the next chocolate bar gets the dopamine running for many people, and the more they tread this path then the worse it gets because the dopamine receptors keep reducing.”
Lorraine Avery, RN, a diabetes nurse specialist for Solent NHS Trust, who attended the DPC conference, welcomed Dr. Unwin’s presentation.
“My concern as a diabetes nurse specialist is that I’m unsure all our patients recognize their food addiction, and there are often more drivers to eating than just the food in front of them,” she said in an interview. “I think there’s an emotional element, too. These people are often ‘yo-yo’ dieters, and they join lots of expert companies to help them lose weight, but these companies want them to regain and re-join their programs,” she said.
“I think there is something about helping patients recognize they have a food addiction and they need to consider that other approaches might be helpful.”
Dr. Unwin reported no relevant financial relationships; some other authors have fee-paying clients with food addiction. Dr. Gearhardt and Ms. Avery reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.