Fructose, the sugar found in soft drinks, fruit juice and many processed foods, may help ovarian cancer cells survive and spread after chemotherapy, according to preclinical research from The Wistar Institute published in Nature Aging in late July 2026. The work was carried out in cell cultures and animal models, not in patients.
The researchers describe two ways fructose appears to feed into the process. Ovarian tumor cells still alive after chemotherapy release fructose as a chemical signal to their neighbors, and dietary fructose from sugary foods and drinks can send a similar signal on its own. In both cases, the sugar seems to lower cholesterol production in nearby cancer cells, weakening the connections that hold cells together and making it easier for individual cells to break off and travel to other organs.
What the researchers saw
The team, led by postdoctoral fellow Aidan Cole and senior author Katherine Aird at the Philadelphia-based Wistar Institute, combined laboratory cell work with preclinical animal models. They collected the molecules released by chemo-surviving cancer cells and tested how those secretions affected the behavior of neighboring tumor cells.
"Some cancer cells that survive chemotherapy aren't dividing anymore, but they're still biologically active," Cole said in the Wistar Institute press release. He added that the study is among the first to show that a nutrient, in this case fructose, can act as one of those signals.
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Cholesterol, often thought of as a villain in heart health, plays a very different role between cells. It helps hold cell membranes together like a biological glue. When fructose suppresses cholesterol production, those bonds weaken and tumor cells detach more easily, which is what allows cancer to spread through the abdomen.
Why the finding matters
Metastasis, the movement of cancer to distant sites, accounts for roughly 90 percent of ovarian cancer deaths, according to News Medical's coverage of the study. Nearly all patients receive platinum-based chemotherapy, and while tumors often shrink at first, the disease commonly returns and spreads.
The Wistar team suggests that some cancer cells surviving that first round of treatment may quietly set the stage for the next wave by chemically nudging their neighbors to loosen up and move.
Aird raised a practical question the research now opens up. "We haven't tested this effect in patients yet, but it raises questions about combining cholesterol-lowering drugs with chemotherapy, especially since ovarian cancer is most common in postmenopausal women who are often already on statins," she said in the EurekAlert release.
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What it does not yet mean for patients
The findings are preclinical. No human trial has tested whether cutting fructose intake, or adding statins to chemotherapy, changes outcomes for people with ovarian cancer. Cole stressed that the work is early, noting it is the first time researchers have shown in a preclinical model, rather than just a dish, that the molecules released by chemo-surviving cells drive further spread.
The researchers also think other cancers that spread within the torso, including pancreatic, colon and liver cancers, could behave in a similar way, though that has not yet been shown.
For now, the study does not change treatment guidance. Anyone undergoing cancer treatment should talk with their oncologist before making major dietary changes or starting or stopping medications such as statins. What the work does add is a fresh mechanistic clue about how ovarian cancer resists treatment, and a possible new lead for scientists looking to keep it from coming back.
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This article is made and published by Jesper Bengtson, who may have used AI in the preparation.