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Study · Randomized controlled trial · n = 61 · 2024

8 results

Intranasal Oxytocin for Obesity.

Plessow F, Kerem L, Wronski ML, Asanza E, O'Donoghue ML, Stanford FC, Eddy KT, Holmes TM, Misra M, Thomas JJ, Galbiati F, Muhammed M and 13 more

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Sella AC, Hauser K, Smith SE, Holman K, Gydus J, Aulinas A, Vangel M, Healy B, Kheterpal A, Torriani M, Holsen LM, Bredella MA, Lawson EA

NEJM evidence23 Apr 2024Cited by 22 (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 study8

8 results from studies that gave the peptide. 8 results from people.

  1. 01HumanRandomized controlled trialEfficacy outcome

    In adults with obesity, intranasal oxytocin did not change body weight at week 8 compared with placebo.

    In plain wordsIn adults with obesity, oxytocin nasal spray did not change body weight more than placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changeBody weight change from baseline to week 8
    Study

    n = 61

    Comparator
    Placebo
    Analysis
    Primary
    Outcome group
    Body weight · Metabolic and weight
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Measurements

    Body weight change
    0.2 kg
    oxytocin
    Body weight change
    0.26 kg
    placebo

    Source sentences

    Summary
    There was no difference in body weight change from baseline to week 8 between oxytocin and placebo groups (0.20 vs. 0.26 kg; P=0.934).
    2 context sentences
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.
  2. 02HumanRandomized controlled trialEfficacy outcome

    In adults with obesity, oxytocin did not change total fat mass versus placebo.

    In plain wordsIn adults with obesity, oxytocin did not change total body fat compared with placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changeTotal fat mass change
    Study

    n = 61

    Comparator
    Placebo
    Analysis
    Secondary
    Outcome group
    Body weight · Metabolic and weight
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Measurements

    Difference in total fat
    196 g
    oxytocin vs placebo

    Source sentences

    Summary
    Oxytocin (vs. placebo) was not associated with beneficial effects on body composition or resting energy expenditure from
    3 context sentences
    Summary · context
    total fat: difference [95% confidence interval], 196.0 g [-1036 to 1428]
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.
  3. 03HumanRandomized controlled trialEfficacy outcome

    In adults with obesity, oxytocin did not change abdominal visceral fat versus placebo.

    In plain wordsIn adults with obesity, oxytocin did not change belly fat compared with placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changeVisceral adipose tissue change
    Study

    n = 61

    Comparator
    Placebo
    Analysis
    Secondary
    Outcome group
    Body weight · Metabolic and weight
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Measurements

    Difference in visceral fat
    3.1 cm2
    oxytocin vs placebo

    Source sentences

    Summary
    Oxytocin (vs. placebo) was not associated with beneficial effects on body composition or resting energy expenditure from
    3 context sentences
    Summary · context
    visceral fat: 3.1 cm2 [-11.0 to 17.2]
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.
  4. 04HumanRandomized controlled trialEfficacy outcome

    In adults with obesity, oxytocin did not change liver fat fraction versus placebo.

    In plain wordsIn adults with obesity, oxytocin did not change liver fat compared with placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changeLiver fat fraction change
    Study

    n = 61

    Comparator
    Placebo
    Analysis
    Secondary
    Outcome group
    Liver fat and liver function · Liver
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Measurements

    Difference in liver fat fraction
    −0.01 proportion
    oxytocin vs placebo

    Source sentences

    Summary
    Oxytocin (vs. placebo) was not associated with beneficial effects on body composition or resting energy expenditure from
    3 context sentences
    Summary · context
    liver fat: -0.01 [-0.03 to 0.01]
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.
  5. 05HumanRandomized controlled trialEfficacy outcome

    In adults with obesity, oxytocin did not change resting energy expenditure versus placebo.

    In plain wordsIn adults with obesity, oxytocin did not change resting energy use compared with placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changeResting energy expenditure change
    Study

    n = 61

    Comparator
    Placebo
    Analysis
    Secondary
    Outcome group
    Energy expenditure and thermogenesis · Metabolic and weight
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Measurements

    Difference in resting energy expenditure
    −64 kcal/day
    oxytocin vs placebo

    Source sentences

    Summary
    Oxytocin (vs. placebo) was not associated with beneficial effects on body composition or resting energy expenditure from
    3 context sentences
    Summary · context
    resting energy expenditure: -64.0 kcal/day [-129.3 to 1.4]
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.
  6. 06HumanRandomized controlled trialEfficacy outcome

    In adults with obesity, oxytocin was associated with reduced caloric intake at the test meal compared with placebo.

    In plain wordsIn adults with obesity, oxytocin was linked to eating fewer calories at a test meal than placebo.

    Peptide
    Oxytocin
    Outcome
    DecreaseCaloric intake at test meal
    Study

    n = 61

    Comparator
    Placebo
    Analysis
    Secondary
    Outcome group
    Appetite and food intake · Metabolic and weight
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Measurements

    Difference in caloric intake
    −152 kcal
    oxytocin vs placebo

    Source sentences

    Summary
    Oxytocin compared with placebo was associated with reduced caloric intake at the test meal (-31.4 vs. 120.6 kcal; difference [95% confidence interval], -152.0 kcal [-302.3 to -1.7]).
    2 context sentences
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.
  7. 07HumanRandomized controlled trialSafety outcome

    In adults with obesity, there were no serious adverse events with oxytocin or placebo.

    In plain wordsIn adults with obesity, no serious side effects occurred in the trial.

    Peptide
    Oxytocin
    Outcome
    No significant changeSerious adverse events
    Study

    n = 61

    Comparator
    Placebo
    Outcome group
    Adverse events · Whole body
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Source sentences

    Summary
    There were no serious adverse events.
    2 context sentences
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.
  8. 08HumanRandomized controlled trialSafety outcome

    In adults with obesity, incidence and severity of adverse events did not differ between oxytocin and placebo.

    In plain wordsIn adults with obesity, side effects were no more common or severe with oxytocin than with placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changeIncidence and severity of adverse events
    Study

    n = 61

    Comparator
    Placebo
    Outcome group
    Adverse events · Whole body
    Studied dose
    24 IU four times daily · intranasal · 8 weeksAs given in this study (human).

    Source sentences

    Summary
    Incidence and severity of adverse events did not differ between groups.
    2 context sentences
    Summary · context
    In this randomized, double-blind, placebo-controlled trial, we randomly assigned adults with obesity 1:1 (stratified by sex and obesity class) to receive intranasal oxytocin (24 IU) or placebo four times daily for 8 weeks.
    Summary · context
    Sixty-one participants (54% women; mean age ± standard deviation, 33.6 ± 6.2 years; body-mass index [the weight in kilograms divided by the square of the height in meters], 36.9 ± 4.9) were randomly assigned.

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

Registered trials1

Trials this study reports on, or that list this study as a reference. Registry data from ClinicalTrials.gov.

1 trial · 1 completed · 1 with posted results · source ClinicalTrials.gov (opens in a new tab)

CompletedPhase 2Results postedNCT03043053

The Effects of Oxytocin in Obese Adults

Massachusetts General Hospitaln = 611 Jul 2017 to 7 Jul 2022

Obesity

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, 02:47 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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