A natural compound called glycyrrhizin from licorice root reduced weight gain in rats eating high-fat diets by activating the NrF2 cellular defense pathway, according to Gram Research analysis. However, this early animal study cannot yet confirm whether the same benefits would occur in humans, and more research is needed before recommending licorice supplements for weight management.
Researchers studied a natural substance called glycyrrhizin, found in licorice root, to see if it could help reduce weight gain in rats eating high-fat diets. According to Gram Research analysis, the compound appeared to work by activating a protective pathway in the body called NrF2, which helps cells defend themselves against damage. While the results are promising, this early-stage research was conducted in animals, so scientists will need to test whether these benefits apply to humans before making any recommendations about using licorice supplements for weight management.
Key Statistics
A 2018 animal study published in Life Sciences found that glycyrrhizin, a compound from licorice root, reduced weight gain in rats fed high-fat diets by activating the NrF2 cellular defense pathway.
Research showed that glycyrrhizin appeared to reduce fat accumulation and improve metabolic markers in rats, though the study was conducted in animals and human results remain unknown.
The Quick Take
- What they studied: Whether a natural compound from licorice root could reduce obesity and weight gain caused by eating high-fat foods
- Who participated: Laboratory rats fed high-fat diets to mimic obesity conditions in humans
- Key finding: Glycyrrhizin, the active ingredient in licorice, appeared to reduce weight gain by activating the body’s natural defense system called the NrF2 pathway
- What it means for you: This is early research in animals that suggests licorice compounds might one day help with weight management, but human studies are needed before anyone should use licorice supplements for this purpose
The Research Details
This was an animal study published in 2018 that examined how glycyrrhizin, a natural compound extracted from licorice root, affected rats eating a high-fat diet. The researchers gave some rats the compound while others received no treatment, then measured changes in body weight, fat accumulation, and activity of protective proteins in their cells. By comparing the two groups, scientists could determine whether glycyrrhizin had any effect on obesity development. The study focused specifically on how the compound activated the NrF2 pathway, which is a cellular defense system that protects against oxidative stress, a type of cellular damage linked to obesity and metabolic problems.
Understanding how natural compounds work at the cellular level helps scientists identify new potential treatments for obesity. By studying the specific pathway involved, researchers can better understand the mechanism and predict whether similar approaches might work in humans. This type of foundational research is necessary before moving to human trials.
This was a controlled laboratory study, which provides reliable information about how a substance affects a specific biological system. However, animal studies do not always translate to human results. The research was published in a peer-reviewed journal, meaning other scientists reviewed the work before publication. The fact that this paper now carries an Expression of Concern notice suggests there may be questions about the original findings that readers should be aware of.
What the Results Show
The study found that rats receiving glycyrrhizin showed reduced weight gain compared to rats eating high-fat diets without the compound. The researchers observed that glycyrrhizin appeared to activate the NrF2 pathway, a cellular defense system that protects against oxidative stress. This activation seemed to help the rats’ bodies better manage the metabolic challenges caused by high-fat eating. The compound appeared to reduce fat accumulation in tissues and improve how the body processed nutrients.
Additional measurements showed that glycyrrhizin may have improved markers of cellular health and reduced inflammation in the rats’ bodies. These secondary effects suggest the compound might work through multiple mechanisms, not just through the NrF2 pathway alone.
This research builds on earlier studies suggesting that licorice compounds have antioxidant and anti-inflammatory properties. However, most previous research focused on other health conditions. This study was among the first to specifically examine glycyrrhizin’s potential role in obesity management through the NrF2 pathway.
This research was conducted only in rats, so results may not apply to humans. The sample size and specific experimental conditions were not detailed in the available information. The Expression of Concern notice indicates potential issues with the original publication that readers should consider. Additionally, animal studies often use controlled conditions that do not reflect real-world eating and lifestyle patterns in humans.
The Bottom Line
This research is too early-stage to recommend glycyrrhizin supplements for weight management. Confidence level: Low. Anyone interested in obesity treatment should consult healthcare providers about proven approaches like balanced nutrition and physical activity. Future human studies would be needed to determine if these animal findings apply to people.
Researchers studying natural compounds for obesity treatment should find this work interesting. People with obesity or those interested in natural health approaches may find the research intriguing, but should not change their behavior based on this single animal study. Healthcare providers may use this as background information for understanding emerging research directions.
If human studies eventually confirm these findings, it would likely take 5 to 10 years or more before any licorice-based treatment could become available as a medical option. This timeline reflects the typical process of moving from animal research to human testing to regulatory approval.
Frequently Asked Questions
Can I use licorice supplements to lose weight based on this research?
Not yet. This study was conducted in rats, not humans. While results are promising, scientists need to conduct human trials first. Talk to your doctor before taking any supplements for weight management.
What is the NrF2 pathway and why does it matter for weight loss?
NrF2 is a cellular defense system that protects against oxidative stress, a type of damage linked to obesity and metabolic problems. Activating this pathway may help the body better manage weight, though more research is needed.
How long would it take for a licorice treatment to become available if this research is confirmed?
If human studies confirm these animal findings, it would typically take 5 to 10 years or longer before any licorice-based treatment could receive regulatory approval and become available as a medical option.
Why does this paper have an Expression of Concern notice?
An Expression of Concern indicates that the journal has questions about the original findings or methodology. Readers should be aware that the reliability of these results may be questioned by the scientific community.
Want to Apply This Research?
- Track daily dietary fat intake in grams and weekly body weight to monitor how diet composition affects weight changes over time
- Users could experiment with reducing high-fat foods while increasing whole foods, then use the app to log changes in energy levels and weight trends to see what works for their body
- Establish a baseline of current eating patterns and weight, then track weekly progress on reducing high-fat foods while monitoring energy, digestion, and weight changes over 8 to 12 weeks
This research was conducted in laboratory animals and has not been tested in humans. The Expression of Concern notice indicates potential issues with the original publication. These findings should not be used as a basis for self-treatment or supplement use. Anyone considering licorice supplements or seeking obesity treatment should consult with a qualified healthcare provider. This article is for informational purposes only and does not constitute medical advice.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.