Tomato and Soy Juice Reduces Inflammation Markers in Obese Adults

A recent study has demonstrated that drinking tomato and soy juice may help reduce inflammation markers in healthy adults with obesity after four weeks of regular intake.

The researchers found that consuming this juice, which is rich in bioactive plant compounds, led to a decrease in the levels of several inflammation-related proteins compared to a control group drinking regular tomato juice without the same bioactive composition.

The tomato and soy juice contains two main compounds: lycopene and soy isoflavones. These plant-derived substances are believed to possess antioxidant and anti-inflammatory properties. The study observed a significant reduction in three inflammatory markers in the blood, recognized as indicators of systemic inflammation.

Lycopene is a natural pigment responsible for the red color of tomatoes, while soy isoflavones belong to a group of plant compounds that mimic some effects of the hormone estrogen and are produced by plants as part of their biological defense mechanisms.

Jessica Cooperstone, the lead researcher from Ohio State University, explained that the study aimed to scientifically test dietary interventions as precise methods to modulate inflammation in the body rather than relying on general assumptions regarding the health benefits of foods.

Clinical Trial on Pancreatitis Patients

Following these findings, the research team initiated a new clinical trial to examine the effect of the juice on patients with pancreatitis, intending to assess its potential as an adjunct in reducing inflammation associated with the disease.

Researchers at Ohio State University developed this juice based on prior evidence linking tomato and soy consumption with reduced risks of certain diseases. They used tomatoes high in lycopene, fortified with soy extracts.

Subsequent studies also indicated that consuming this juice correlated with reductions in some biomarkers related to prostate cancer, along with possible effects on inflammation and metabolic pathways connected to obesity and chronic diseases.

Study Design and Outcomes

In the current study, twelve obese adult participants consumed two bottles daily of the tomato and soy juice for four weeks, followed by a washout period, then consumed a control tomato juice for an additional four weeks.

The results showed decreases in three types of inflammatory cytokines: interleukin (IL-5), interleukin (IL-12p70), and granulocyte-macrophage colony-stimulating factor (GM-CSF). There was also a trend toward reduced tumor necrosis factor alpha (TNF-α), although this did not reach statistical significance.

Urine sample analyses revealed changes in metabolites related to metabolic processes, with shared effects observed between both juices. This suggests biological responses influenced not by a single compound but by a combination of plant compounds.

Implications and Future Research

The researchers emphasized that further studies are necessary to confirm the mechanisms underlying these effects, but the findings provide promising indications that nutrition can directly influence biological processes linked to inflammation.

Previous animal studies supported this hypothesis, showing that tomato and soy juice could reduce inflammation and alleviate the severity of chronic pancreatitis, reinforcing the rationale for investigating its clinical impact on humans.

The team noted that current treatments for pancreatitis primarily focus on symptom relief, highlighting the potential importance of dietary interventions in improving patients' quality of life.

The study was published in the journal "Molecular Nutrition & Food Research".