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Study · Measured the body's own peptide · 2020

1 result

Effects of vitamin D supplementation on depression and some involved neurotransmitters.

Kaviani M, Nikooyeh B, Zand H, Yaghmaei P, Neyestani TR

Journal of affective disorders13 Mar 2020Cited by 74 (Europe PMC)

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 levelRandomized controlled trialOther

    In adults with mild to moderate depression, vitamin D supplementation did not significantly change serum oxytocin versus placebo; the between-group difference was insignificant.

    In plain wordsIn adults with depression, vitamin D did not clearly change the body's own oxytocin levels compared with placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changeSerum oxytocin concentration change
    Study

    n = 56

    Comparator
    Placebo
    Outcome group
    Endogenous peptide levels · Mental health and mood

    Source sentences

    Summary
    Oxytocin concentrations were significantly reduced in controls (-6.49±13.69 ng/mL, P = 0.01), but between -group differences were insignificant.
    1 context sentence
    Summary · context
    An 8-week double-blind randomized clinical trial was conducted on 56 subjects with mild to moderate depression, aged 43.0 ± 1.15yrs. The patients were randomly allocated into two groups: intervention (50,000 IU cholecalciferol/2wks) and control (placebo).

    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, 02:49 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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