Olive oil (Photo by DUSAN ZIDAR on Shutterstock)
BLACKSBURG, Va. — Researchers have discovered that a compound found in olives could be a game-changer in the battle against obesity and Type 2 diabetes. Elenolic acid, a natural substance present in mature olives and extra virgin olive oil, has shown remarkable potential in reducing blood sugar levels and promoting weight loss in laboratory mice.
The findings, presented at NUTRITION 2024, the annual meeting of the American Society for Nutrition, offer hope for millions of people struggling with these conditions. With obesity rates on the rise and Type 2 diabetes affecting an estimated 462 million people worldwide, the need for effective and accessible treatments has never been more pressing.
Testing elenolic acid on mice
The study’s results are nothing short of impressive. Obese mice with diabetes that were given oral elenolic acid for just one week showed significant weight loss and improved blood sugar regulation compared to untreated mice. Even more remarkably, the glucose-lowering effect of elenolic acid was comparable to that of liraglutide, an injectable diabetes medication, and surpassed the effectiveness of metformin, one of the most commonly prescribed oral medicines for Type 2 diabetes.
But how does elenolic acid work its magic? The key lies in its ability to stimulate the release of two important hormones in the gut: GLP-1 and PYY. These hormones play a crucial role in regulating appetite and metabolism. When we eat, GLP-1 and PYY are released, signaling to our brain that we’re full and helping to control our blood sugar levels.
Elenolic acid seems to mimic this natural process, tricking the body into thinking it has eaten even when it hasn’t. This leads to reduced food intake and increased energy expenditure, both of which contribute to weight loss. Additionally, the compound appears to have insulin-like effects, helping to lower blood sugar levels by promoting glucose uptake in muscle cells and suppressing glucose production in the liver.
The benefits don’t stop there. After four to five weeks of treatment, obese mice showed a 10.7% reduction in body weight, and their blood sugar levels and insulin sensitivity improved to levels comparable with those of healthy, lean mice. The compound also demonstrated impressive effects on liver health, reversing diet-induced fatty liver disease and reducing inflammation.
Does this mean I should consume more olive oil?
While these results are exciting, it’s important to note that the concentration of elenolic acid in olive oil or olives is very low. This means that simply increasing your olive oil intake is unlikely to provide the same benefits seen in this study. The researchers are working on ways to produce elenolic acid more efficiently, potentially paving the way for its use as a dietary supplement or medication in the future.
“Lifestyle modifications and public health measures have had limited impact on the rising prevalence of obesity, one of the top risk factors for Type 2 diabetes,” says Dr. Dongmin Liu, a professor at Virginia Tech and leader of the research team, in a statement. “Available obesity drugs are ineffective in weight loss maintenance, expensive and/or carry potential long-term safety risks. Our goal was to develop safer, cheaper and more convenient multi-targeting agents that can prevent the occurrence of metabolic disorders and Type 2 diabetes.”
Dr. Liu and his team are now focusing on understanding exactly how elenolic acid works in the body. They’re studying how it’s absorbed, distributed, metabolized, and excreted, which will provide crucial information about its safety and effectiveness for potential human use.
This research represents a significant step forward in the search for natural, multi-targeting treatments for obesity and Type 2 diabetes. If further studies confirm these findings and prove the safety of elenolic acid in humans, it could offer a new, more accessible option for millions of people struggling with these conditions.
As we await further developments, it’s worth remembering that while potential new treatments are exciting, maintaining a healthy lifestyle through balanced nutrition and regular physical activity remains the cornerstone of diabetes and obesity prevention and management. The promise of elenolic acid is something we’ll definitely be keeping our eyes on in the future.
Paper Summary
Methodology
The researchers used a variety of laboratory techniques to study the effects of elenolic acid. They began by screening natural compounds to identify those that could stimulate the release of GLP-1 and PYY hormones from gut cells. Once they identified elenolic acid as a promising candidate, they tested it in obese mice with diabetes.
The mice were given oral doses of elenolic acid, and their weight, blood sugar levels, and other metabolic markers were monitored over several weeks. The researchers also conducted experiments on various cell types, including liver cells and muscle cells, to understand how elenolic acid affects different tissues in the body.
Key Results
The study found that elenolic acid had significant beneficial effects on obese, diabetic mice. After just one week of treatment, the mice showed reduced body weight and improved blood sugar regulation. Over a longer period (4-5 weeks), the mice experienced a 10.7% reduction in obesity, and their blood sugar levels and insulin sensitivity improved to levels similar to those of healthy, lean mice.
The compound also showed positive effects on liver health, reversing diet-induced fatty liver disease. In cell studies, elenolic acid was found to stimulate glucose uptake in muscle cells and suppress glucose production in liver cells, mimicking the effects of insulin.
Discussion & Takeaways
This study suggests that elenolic acid could be a promising new treatment for both obesity and Type 2 diabetes. Its ability to act on multiple targets in the body – stimulating hormone release in the gut, improving insulin sensitivity, and affecting glucose metabolism in muscle and liver cells – makes it a particularly interesting candidate.
The fact that it’s a natural compound derived from olives also suggests it could potentially have a good safety profile, although this would need to be confirmed in human studies. However, the researchers caution that the concentrations of elenolic acid used in the study are much higher than what would be found in typical olive consumption, so simply eating more olives or olive oil would not provide the same benefits. Further research is necessary to understand how elenolic acid works in the human body and to develop it into a potential treatment.
Funding
The study was supported by the National Institutes of Health (grant R01DK134401-01A1), the Diabetes Action Research and Education Foundation, and SJ Ritchey Research Grants.
