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Study · Measured the body's own peptide · 2024

1 result

Does tomato juice consumption have a positive effect on the physical and psychological states of individuals in the Coronavirus era?

Hikima N, Watanabe D, Yamaguchi T, Hu A, Tabuchi M, Takase H, Goto K, Watanabe A, Kawaharada T, Mizushima S, Mizushima A

Neuro endocrinology letters1 Apr 2024

PMID38583186 (opens in a new tab)PepBankPUB-38583186
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Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study1

No result from this study comes from a test of the peptide.

Natural levels measured1

These results measure the body's own peptide. Nobody was given the peptide. They are not evidence about taking it. They are left out of key results, evidence counts and charts.

  1. 01HumanEndogenous levelObservational studyOther

    In healthy adults, 4 weeks of tomato juice consumption increased salivary oxytocin levels (p = 0.0427).

    In plain wordsIn healthy adults, drinking tomato juice for 4 weeks was linked to higher levels of the body's own oxytocin in saliva.

    Peptide
    Oxytocin
    Outcome
    IncreaseSalivary oxytocin level
    Study

    n = 10

    Comparator
    Before consumption
    Outcome group
    Endogenous peptide levels · Endocrine and hormones

    Source sentences

    Summary
    significantly increased oxytocin levels (p = 0.0427).
    2 context sentences
    Summary · context
    Ten healthy adults (mean age, 39.7±4.2 years) who consumed 180 mL of tomato juice twice daily for 4 weeks were enrolled.
    Summary · context
    Five salivary stress biomarkers (cortisol, α-amylase, secretory immunoglobulin A, chromogranin A, and oxytocin) were measured using approximately 1ml of passively pooled saliva samples, which were stored at -20°C until measurement.

    This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    11 Oct 2026, 00:50 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 02:48 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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