Tomato-Soy Juice Cuts Multiple Inflammation Markers in Four Weeks

Chronic low-grade inflammation is one of the most significant drivers of age-related disease, linking obesity to conditions ranging from cardiovascular disease to cancer and metabolic dysfunction. Identifying accessible, food-based tools to dampen this inflammation is a key priority in longevity research. A new clinical study from Ohio State University offers promising early evidence that a targeted functional beverage can do exactly that.

The study tested a specially formulated tomato-soy juice containing high concentrations of lycopene and soy isoflavones — two well-studied plant compounds with proposed anti-inflammatory and hormone-modulating properties. Twelve healthy adults with obesity consumed two 6-ounce cans of the juice daily for four weeks. After a washout period, participants switched to a control tomato juice that lacked these key compounds. Blood samples revealed that the tomato-soy juice significantly reduced three circulating proteins associated with systemic inflammation, while the control juice did not produce the same effect.

Lycopene, the carotenoid that gives tomatoes their red color, and soy isoflavones, which can weakly mimic estrogen, have both been individually associated with lower cancer risk and anti-inflammatory effects in prior research. The tomatoes used were specially bred for elevated lycopene content, and the juice was further fortified with soy isoflavone extract, making it more potent than typical dietary sources.

For health-conscious individuals, the findings point toward functional foods as a legitimate complement to pharmaceutical or lifestyle strategies for managing inflammation. The simplicity of the intervention — a daily juice — makes it particularly accessible. Researchers have already secured NIH funding to test the same juice in pancreatitis patients, signaling institutional confidence in the approach.

Important caveats apply. The trial was very small at just 12 participants, and results need replication in larger, more diverse populations. The study was published in Molecular Nutrition and Food Research and represents early-phase evidence rather than a clinical recommendation. Individuals with hormone-sensitive conditions should consult a physician before significantly increasing soy isoflavone intake.