Most discussions and treatment strategies about Type 2 diabetes focus on blood sugar.
Patients are encouraged to monitor glucose levels, count carbohydrates, take medications, and watch laboratory results, along with diet and exercise. While these strategies can be useful, they often overlook an important factor that contributes to the disease: the brain.
Many individuals with Type 2 diabetes struggle with persistent cravings for sugary and highly processed foods. People often dismiss these cravings as a lack of self-control.
However, neuroscience suggests a different explanation.
The brain’s reward system may play a significant role in maintaining the dietary patterns that contribute to unwanted weight gain and elevated blood sugar. The human brain evolved to seek foods that provided needed nutrients and energy efficiently. When energy-containing nutrients were scarce, this system helped ensure survival.
Today, those same reward pathways are exposed to an endless supply of highly processed, easily available, and affordable products specifically designed to maximize consumption.
Every time a person eats a sugary food, reward circuits activate.
The brain learns to associate the food with pleasure, satisfaction, and relief. The lack of immediate health consequences encourages repetition of this eating behavior. Eventually, cravings become automatic. This creates a cycle that can be difficult to break.
Individuals consume processed and sugary foods because they are conditioned to crave them. When these foods raise blood sugar, insulin spikes. When blood sugar drops, it stimulates hunger and cravings. The cycle continues.
Traditional diabetes management often focuses on controlling blood sugar after it rises.
A more effective long-term strategy may involve reducing the behaviors that drive repeated consumption of processed foods.
This is where the reward system becomes important.
The brain can change.
Neuroscientists refer to this ability as neuroplasticity.
Just as reward pathways can become strengthened through repeated exposure to sugary foods, they can weaken when those foods are removed.
Many individuals report that cravings decrease substantially after several weeks of consuming fewer ultra-processed foods.
Foods that once seemed irresistible become less appealing and less enjoyable.
The brain adapts.
This process does not happen overnight.
It requires consistency, practice, and patience.
However, it demonstrates an important principle: food preferences are not fixed.
The brain can be retrained.
One of the most effective strategies involves replacing highly processed foods with minimally processed alternatives.
Whole, organically grown foods generally provide essential nutrients, energy nutrients and fiber. Eating slowly promotes satiety, so you can eat less while feeling full. In addition, it supports healthier appetite regulation.
As blood sugar becomes more stable, many people experience fewer cravings.
The reward system begins responding differently.
The focus shifts from chasing stimulation to seeking nourishment.
This distinction matters because Type 2 diabetes often results from years of dietary patterns shaped by biological drives, environmental factors, and food industry practices.
Addressing the brain’s role in those patterns offers an opportunity to target a root cause rather than merely managing elevated blood sugar.
The goal is not perfection.
The goal is creating conditions that make healthy choices easier and unhealthy choices less appealing.
When individuals understand how reward systems influence eating behavior, they gain a powerful advantage.
Instead of fighting their biology, they try to understand how it works and begin working with it.
And that may be one of the most important steps toward reversing Type 2 diabetes.
John Poothullil practiced medicine as a pediatrician and allergist for more than 30 years, with 27 of those years in the state of Texas. He received his medical degree from the University of Kerala, India in 1968, after which he did two years of medical residency in Washington, DC and Phoenix, AZ and two years of fellowship, one in Milwaukee, Wisconsin and the other in Ontario, Canada. He began his practice in 1974 and retired in 2008. He holds certifications from the American Board of Pediatrics, The American Board of Allergy & Immunology, and the Canadian Board of Pediatrics.During his medical practice, John became interested in understanding the causes of and interconnections between hunger, satiation, and weight gain. His interest turned into a passion and a multi-decade personal study and research project that led him to read many medical journal articles, medical textbooks, and other scholarly works in biology, biochemistry, physiology, endocrinology, and cellular metabolic functions. This eventually guided Dr. Poothullil to investigate the theory of insulin resistance as it relates to diabetes. Recognizing that this theory was illogical, he spent a few years rethinking the biology behind high blood sugar and finally developed the fatty acid burn switch as the real cause of diabetes.Dr. Poothullil has written articles on hunger and satiation, weight loss, diabetes, and the senses of taste and smell. His articles have been published in medical journals such as Physiology and Behavior, Neuroscience and Biobehavioral Reviews, Journal of Women’s Health, Journal of Applied Research, Nutrition, and Nutritional Neuroscience. His work has been quoted in Woman’s Day, Fitness, Red Book and Woman’s World.Dr. Poothullil resides in Portland, OR and is available for phone and live interviews.To learn more buy the books at: amazon.com/author/drjohnpoothullil
Visit drjohnonhealth.com to learn more. You can also contact him at john@drhohnonhealth.com.
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