The effect of intranasal insulin on appetite and mood in women with and without obesity: an experimental medicine study


Background/Objectives Intranasal (IN) administration of insulin decreases appetite in humans, but the underlying mechanisms are unclear, and it is unknown whether IN insulin affects the food intake of women with obesity. Subjects/Methods In a double-blind, placebo-controlled, crossover design, participants (35 lean women and 17 women with obesity) were randomized to receive 160 IU/1.6 mL of IN insulin or placebo in a counterbalanced order in the post prandial state. The effects of IN insulin on cookie intake, appetite, mood, food reward, cognition and neural activity were assessed. Results IN insulin in the post prandial state reduced cookie intake, appetite and food reward relative to placebo and these effects were more pronounced for women with obesity compared with lean women. IN insulin also improved mood in women with obesity. In both BMI groups, IN insulin increased neural activity in the insula when viewing food pictures. IN insulin did not affect cognitive function. Conclusions These results suggest that IN insulin decreases palatable food intake when satiated by reducing food reward and that women with obesity may be more sensitive to this effect than lean women. Further investigation of the therapeutic potential of IN insulin for weight management in women with obesity is warranted.

Publication DOI:
Divisions: College of Health & Life Sciences > School of Psychology
College of Health & Life Sciences
College of Health & Life Sciences > Applied Health Research Group
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Uncontrolled Keywords: Administration, Intranasal,Appetite,Biomedical Research,Double-Blind Method,Energy Intake,Female,Humans,Insulin/pharmacology,Obesity,Nutrition and Dietetics,Endocrinology, Diabetes and Metabolism,Medicine (miscellaneous)
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2022-07
Published Online Date: 2022-04-09
Accepted Date: 2022-03-21
Authors: Schneider, Elizabeth
Spetter, Maartje S.
Martin, Elizabeth
Sapey, Elizabeth
Yip, Kay Por
Manolopoulos, Konstantinos N.
Tahrani, Abd A.
Thomas, Jason M. (ORCID Profile 0000-0001-7013-8994)
Lee, Michelle
Hallschmid, Manfred
Rotshtein, Pia
Dourish, Colin T.
Higgs, Suzanne



Version: Published Version

License: Creative Commons Attribution

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