Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones

Intermittent fasting has become an increasingly popular strategy in losing weight and associated reduction in obesity-related medical complications. Overwhelming studies support metabolic improvements from intermittent fasting in blood glucose levels, cardiac and brain function, and other health ben...

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Main Authors: Bo Hye Kim, Yena Joo, Min-Seon Kim, Han Kyoung Choe, Qingchun Tong, Obin Kwon
Format: Article
Language:English
Published: Korean Endocrine Society 2021-08-01
Series:Endocrinology and Metabolism
Subjects:
Online Access:http://www.e-enm.org/upload/pdf/enm-2021-405.pdf
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author Bo Hye Kim
Yena Joo
Min-Seon Kim
Han Kyoung Choe
Qingchun Tong
Obin Kwon
author_facet Bo Hye Kim
Yena Joo
Min-Seon Kim
Han Kyoung Choe
Qingchun Tong
Obin Kwon
author_sort Bo Hye Kim
collection DOAJ
description Intermittent fasting has become an increasingly popular strategy in losing weight and associated reduction in obesity-related medical complications. Overwhelming studies support metabolic improvements from intermittent fasting in blood glucose levels, cardiac and brain function, and other health benefits, in addition to weight loss. However, concerns have also been raised on side effects including muscle loss, ketosis, and electrolyte imbalance. Of particular concern, the effect of intermittent fasting on hormonal circadian rhythms has received little attention. Given the known importance of circadian hormonal changes to normal physiology, potential detrimental effects by dysregulation of hormonal changes deserve careful discussions. In this review, we describe the changes in circadian rhythms of hormones caused by intermittent fasting. We covered major hormones commonly pathophysiologically involved in clinical endocrinology, including insulin, thyroid hormones, and glucocorticoids. Given that intermittent fasting could alter both the level and frequency of hormone secretion, decisions on practicing intermittent fasting should take more considerations on potential detrimental consequences versus beneficial effects pertaining to individual health conditions.
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spelling doaj.art-317a7afe1bb5412891cebe5705f139652022-12-21T21:18:58ZengKorean Endocrine SocietyEndocrinology and Metabolism2093-596X2093-59782021-08-0136474575610.3803/EnM.2021.4052205Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of HormonesBo Hye Kim0Yena Joo1Min-Seon Kim2Han Kyoung Choe3Qingchun Tong4Obin Kwon5 Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, Korea Seoul National University College of Medicine, Seoul, Korea Division of Endocrinology and Metabolism, Department of Internal Medicine, Diabetes Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea Brown Institute of Molecular Medicine and Department of Neurobiology and Anatomy, McGovern Medical School of UTHealth, and MD Anderson Cancer Center & UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, KoreaIntermittent fasting has become an increasingly popular strategy in losing weight and associated reduction in obesity-related medical complications. Overwhelming studies support metabolic improvements from intermittent fasting in blood glucose levels, cardiac and brain function, and other health benefits, in addition to weight loss. However, concerns have also been raised on side effects including muscle loss, ketosis, and electrolyte imbalance. Of particular concern, the effect of intermittent fasting on hormonal circadian rhythms has received little attention. Given the known importance of circadian hormonal changes to normal physiology, potential detrimental effects by dysregulation of hormonal changes deserve careful discussions. In this review, we describe the changes in circadian rhythms of hormones caused by intermittent fasting. We covered major hormones commonly pathophysiologically involved in clinical endocrinology, including insulin, thyroid hormones, and glucocorticoids. Given that intermittent fasting could alter both the level and frequency of hormone secretion, decisions on practicing intermittent fasting should take more considerations on potential detrimental consequences versus beneficial effects pertaining to individual health conditions.http://www.e-enm.org/upload/pdf/enm-2021-405.pdfintermittent fastingcircadian rhythminsulinthyroid hormonesglucocorticoids
spellingShingle Bo Hye Kim
Yena Joo
Min-Seon Kim
Han Kyoung Choe
Qingchun Tong
Obin Kwon
Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones
Endocrinology and Metabolism
intermittent fasting
circadian rhythm
insulin
thyroid hormones
glucocorticoids
title Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones
title_full Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones
title_fullStr Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones
title_full_unstemmed Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones
title_short Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones
title_sort effects of intermittent fasting on the circulating levels and circadian rhythms of hormones
topic intermittent fasting
circadian rhythm
insulin
thyroid hormones
glucocorticoids
url http://www.e-enm.org/upload/pdf/enm-2021-405.pdf
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