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Study · Measured the body's own peptide · 2007

1 result

Hormonal correlates of human paternal interactions: a hospital-based investigation in urban Jamaica.

Gray PB, Parkin JC, Samms-Vaughan ME

Hormones and behavior24 Jul 2007Cited by 72 (Europe PMC)

PMID17716675 (opens in a new tab)DOI10.1016/j.yhbeh.2007.07.005 (opens in a new tab)PepBankPUB-17716675
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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 Jamaican men, the body's own urinary oxytocin levels did not differ between single men and fathers.

    In plain wordsIn Jamaican men, the body's own oxytocin levels in urine did not differ between single men and fathers.

    Peptide
    Oxytocin
    Outcome
    No significant changeUrinary oxytocin across fatherhood groups
    Study

    n = 43

    Comparator
    Single men versus coresidential and visiting fathers
    Outcome group
    Hormone levels · Endocrine and hormones

    Source sentences

    Summary
    No group differences in cortisol, oxytocin or vasopressin levels were observed.
    2 context sentences
    Summary · context
    We recruited 43 men, aged 18-38, to participate: 15 single men; 16 "coresidential" fathers (men who live with their adult female partner and youngest child); and 12 "visiting" fathers (men who live apart from their adult female partner and youngest child).
    Summary · context
    Hormone measures relied upon minimally invasive techniques (salivary testosterone and cortisol, finger prick blood spot prolactin, urinary oxytocin and vasopressin).

    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, 20:03 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 02:51 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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