It's easy to claim we're
"addicted" to foods like the donuts from down the street or our
beloved Thai takeout. But while the concept of food addiction is controversial
among researchers, there is growing evidence that highly-processed, fatty,
sugary foods like pizza, chocolate, chips and cookies as uniquely problematic
foods in people’s lives.
In the latest study published on
the subject, Dr. Nicole Avena of the Icahn School of Medicine at Mount Sinai
found that behaviors and attitudes surrounding some types of food closely
followed addiction patterns. She hopes her work, recently published in the
journal PLOS One, might one day contribute to the next generation of obesity
and eating disorder treatment.
Avena asked 504 participants to
identify the foods that seemed to cause them the most problems. To define
“problem” foods, Avena encouraged participants to use the Yale Food Addiction
Scale, which asks participants to count the number of times they’ve agreed with
sentences like, "I eat to the point where I feel physically ill” or
"I spend a lot of time feeling sluggish or fatigued from overeating,” to
help them identify the biggest offenders. Then Avena averaged the scores for
different kinds of foods and ranked them from most to least problematic when it
came to addiction-like behaviors.
Notice anything? The foods that
caused people the most mental distress and physical discomfort are also foods
that are highly-processed or are high in added fats and sugars. They’re also
more likely to have the highest levels of glycemic load, which is a measurement
of how a food will raise a person’s blood sugar level after eating it. That’s
no coincidence, said Avena.
“Several studies really do
suggest that highly-palatable, highly-processed foods can produce behaviors and
changes in the brain that one would use to diagnose an addiction, like drugs
and alcohol,” Avena told The Huffington Post.
But those studies are generally
animal studies, which means researchers like Avena have a long way to go before
proving that certain kinds of food can be addictive substances that damage and
re-wire the human brain.
Food addiction isn’t an
officially recognized addiction; the closest thing to it in the Diagnostic and
Statistical Manual of Mental Disorders (DSM-5) is binge eating disorder. But
Avena, who has been researching food addiction for over 15 years, says that
hers is the first clinical study to assess the connection between how people
eat certain foods and the properties of that food -- whether it be added fat,
sugar or its highly-processed manufacture. She hopes that the finding could one
day help struggling obese people re-frame their approach to weight loss.
"This could help change the
way we approach obesity treatment,” said Avena in a statement about her study.
"It may not be a simple matter of 'cutting back' on certain foods, but
rather, adopting methods used to curtail smoking, drinking and drug use."
For now, while Avena’s results
might elicit a “duh” from overeaters (who ever heard of uncontrollably eating
Swiss Chard?), she calls them an important first step in recognizing that only
certain foods are linked to addictive eating behavior.
"If someone feels they are addicted
to food, there really is no diagnosis a medical doctor could give to that
person,” said Avena. "This study is helping advance the literature so that
we can help people who have addictive-like eating disorders."
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