Scientists Say This Olive Oil Byproduct Is the Next Big Superfood
For years, olive mill wastewater (OMW) was cast aside as a bitter, murky liquid left over from pressing olives into olive oil. It was unwanted, an afterthought of the production process, with its strong taste and pungent aroma making it more of a problem than a product. But as science often does, it took another look at what was once discarded and discovered something remarkable. This so-called waste product is, in fact, a treasure trove of bioactive compounds, polyphenols, and antioxidants that could make it one of the most potent health boosters yet.
Researchers at Sapienza University in Rome have found that OMW is not just another byproduct but a powerful ally in the fight against harmful pathogens and diseases. Their analysis uncovered exceptionally high levels of oligogalacturonides, compounds known to help protect plants from infections, which could have significant implications for human health. Mediterranean cultures have long used OMW in traditional remedies, but modern science confirms that its benefits extend far beyond folklore. Rich in flavonoids, hydroxytyrosol, and oleuropein—compounds already celebrated for their anti-inflammatory and antioxidant properties—OMW is proving to be a superfood in its own right.
The health benefits of OMW go beyond what standard olive oil offers. While olive oil contains some of these beneficial compounds, the wastewater left behind during extraction is even more concentrated, sometimes containing up to ten times the amount of polyphenols found in extra virgin olive oil. Studies suggest that OMW can aid in reducing inflammation, supporting cardiovascular health, and even improving cognitive function. Its impact on cancer research is also promising, with scientists like Dr. Adriana Albini exploring its potential in inhibiting cancer cell growth while promoting heart health. With additional studies linking it to cholesterol regulation, blood sugar control, and improved digestion, OMW is quickly emerging as a functional food worth paying attention to.
While OMW isn’t yet widely available, some small producers have begun bottling it as a functional beverage, offering a new way to harness its impressive health benefits. For those willing to brave its strong taste, drinking a small daily shot may provide a concentrated dose of its powerful compounds. For the less adventurous, it can be blended into juices or salad dressings. As science continues to unlock the potential of this once-overlooked liquid, it’s clear that the future of superfoods may just be hiding in what we once called waste.