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Psychoneuroendocrinology. 2018 Mar;89:103-112. doi: 10.1016/j.psyneuen.2018.01.006. Epub 2018 Jan 12.

Low subjective socioeconomic status stimulates orexigenic hormone ghrelin - A randomised trial.

Author information

1
Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences, A*STAR, Singapore. Electronic address: aaron_sim@sics.a-star.edu.sg.
2
Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences, A*STAR, Singapore.
3
Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences, A*STAR, Singapore; Division of Medicine, Department of Endocrinology, Tan Tock Seng Hospital, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
4
Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences, A*STAR, Singapore; Division of Psychology, School of Social Sciences, Nanyang Technological University, Singapore.

Abstract

Recent evidence suggests that lower perceived socioeconomic status is linked to increased appetite and intake of greater calories. Yet, whether insecurity of socioeconomic resources directly influences regulatory systems of appetite and energy intake is not known. Considering psychological states, mindsets and beliefs have shown to meaningfully affect physiological responses to food, the present study tested the hypothesis that low subjective socioeconomic status (SSS) will have a direct influence on physiological responses, such as appetite-related hormones (ghrelin, pancreatic polypeptide and insulin). Forty-eight healthy males were randomly (crossover, counterbalanced) assigned, to two experimental conditions where participants were either experimentally induced to feel low SSS or not (control; CON). Feelings of low SSS resulted in an increase in active ghrelin (an orexigenic hormone) following the SSS manipulation compared with baseline, while no change in active ghrelin was observed in CON. Furthermore, participants reported lower fullness and satiety following low SSS compared with CON. Our findings demonstrate that SSS may influence hunger regulation and appetite, and suggest that physiological systems regulating energy balance (i.e. caloric resources) may also be sensitive to perceived deprivation or imbalances in critical non-food resources (socioeconomic resources).

KEYWORDS:

Active ghrelin; Appetite hormones; Brain-gut axis; Deprivation; Subjective socioeconomic status

PMID:
29358119
DOI:
10.1016/j.psyneuen.2018.01.006
[Indexed for MEDLINE]

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