Nutrition·2026-03-21·1 min read

Tomato-Soy Juice Combo Reduces Chronic Inflammation in People with Obesity

A small study found that drinking tomato-soy juice daily for four weeks significantly reduced inflammatory markers in adults with obesity, suggesting whole food combinations may be more effective than isolated nutrients.

By Editorial Team
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Key Takeaways

  • Daily tomato-soy juice reduced multiple inflammatory markers, including IL-5, IL-12p70, and GM-CSF
  • The combination approach showed benefits that regular tomato juice alone did not achieve
  • Plasma lycopene levels increased by 2.5 times, while urine tests revealed metabolic changes from both tomato and soy components

A specialized tomato-soy juice blend significantly reduced inflammatory markers in adults with obesity after just four weeks of daily consumption, according to new research published in a nutrition journal. The small crossover study involving 12 participants found that the combination drink lowered levels of several pro-inflammatory cytokines that are typically elevated in obesity-related chronic conditions.

Key Finding

Tomato-soy juice reduced IL-5, IL-12p70, and GM-CSF inflammatory markers while increasing plasma lycopene by 2.48-fold

These cytokines play key roles in chronic inflammation associated with obesity

Researchers compared the effects of tomato-soy juice containing 54 mg of lycopene and 189.9 mg of isoflavones daily against a control drink made from low-carotenoid tomatoes without soy. Each participant tried both beverages for four weeks with a washout period between treatments. The tomato-soy combination delivered measurable reductions in inflammatory proteins, while tumor necrosis factor-alpha (TNF-α) showed a strong downward trend that approached statistical significance.

The study supports the concept that whole food combinations may outperform isolated nutrients—like taking lycopene or isoflavone supplements separately rather than consuming them together in food form. Urine analysis revealed that soy isoflavone metabolites were the primary distinguishing factor after tomato-soy consumption, while both drinks triggered some shared metabolic changes that researchers attributed to tomato-specific compounds independent of lycopene content.

While the study was limited to 12 participants and a short duration, the researchers note that the anti-inflammatory effects and metabolic changes support investigating this functional food combination for other inflammation-driven chronic conditions. The findings add to growing evidence that strategic food pairings may offer therapeutic benefits beyond what individual nutrients can achieve alone.

Sources & References

  1. Sholola MJ, Miller J, Bilbrey EA, Novotny JA, Francis DM, Mace TA, Cooperstone JL. "Tomato-Soy Juice Reduces Inflammation and Modulates the Urinary Metabolome in Adults With Obesity." - Molecular nutrition & food research (2026)

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