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Special tomato drink may lower inflammation markers, but the study was very small

Ohio State researchers found a special tomato-soy drink lowered inflammation markers in adults with obesity, but the study was very small.

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Woman in a light shirt sipping tomato juice from a tall glass in a bright kitchen.

COLUMBUS, Ohio, July 23 (Nationwide Times) — The main practical point is simple: the drink in this study was specially made, so the result does not translate neatly to ordinary tomato juice. Ohio State researchers reported that a tomato-soy beverage lowered three blood proteins tied to chronic inflammation in adults with obesity.

What did the study test?

The study was published in Molecular Nutrition & Food Research and indexed on PubMed. It followed 12 adults with obesity. Each person drank two 6-ounce servings a day for four weeks in a crossover design, which means the same participants tried both drinks at different times. One drink was the tomato-soy beverage. The other was a low-carotenoid tomato juice control.

What changed?

After the tomato-soy drink, the researchers reported significant drops in IL-5, IL-12p70, and GM-CSF. These are immune signaling proteins linked to inflammation. TNF-alpha also moved down, but not enough to meet conventional statistical significance. The study also found that plasma lycopene rose 2.48-fold.

The paper reported another clue in urine tests. The researchers saw some shared changes in the urine metabolome, which is the mix of small molecules found in urine. That suggests some effects may come from tomatoes themselves, not lycopene alone.

Why is this not the same as regular tomato juice?

The study beverage was not ordinary tomato juice. It was made from tomatoes bred to contain high levels of lycopene and was fortified with soy isoflavones. Because of that, the findings cannot be assumed to apply to a standard bottle of tomato juice from a store.

How strong is the evidence?

The evidence is promising, but it is early. The study included only 12 adults and lasted four weeks. It measured biomarker changes, not long-term health outcomes such as fewer heart attacks, less diabetes, or better weight control. That means the study adds information about how the body may respond, but it does not support broad dietary advice on its own.

Has tomato juice been studied before?

Yes. A separate randomized study published in 2013 and indexed on PubMed found that tomato juice reduced some inflammatory markers in overweight or obese female students at Tehran University of Medical Sciences. That trial is a different study in a different group, so it should not be mixed up with the Ohio State research.

For readers, the takeaway is cautious: this was a specially formulated drink in a very small study, and it may point to a possible anti-inflammatory effect worth studying further. It is not proof that any tomato drink will work the same way in everyday life.

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Thurman Boiles

Raised in Moraga, California, Thurman Boiles is the Sacramento reporter for Times Media Service. Boiles covers local news in Sacramento and crime and justice across California, including public safety, breaking events and the laws and regulations that shape them. Boiles holds a master's degree in communication with a focus on journalism.

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