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Vol. 48, No. 4, 2004
Issue release date: July–August 2004
Section title: Review
Ann Nutr Metab 2004;48:296–303
(DOI:10.1159/000081076)

Physiological and Chronobiological Changes during Ramadan Intermittent Fasting

Roky R. · Houti I. · Moussamih S. · Qotbi S. · Aadil N.
Department of Pharmacology, Faculty of Medicine, Casablanca, Morocco

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Article / Publication Details

First-Page Preview
Abstract of Review

Published online: 10/14/2004

Number of Print Pages: 8
Number of Figures: 0
Number of Tables: 2

ISSN: 0250-6807 (Print)
eISSN: 1421-9697 (Online)

For additional information: http://www.karger.com/ANM

Abstract

Background and Aims: During the month of Ramadan, Moslems refrain from drinking and eating between sunrise and sunset. This review aimed to analyze the effects of Ramadan fasting on physiological and behavioral variables in healthy subjects. Methods: Articles included in this paper were taken from Medline, three international congresses on health and Ramadan, and in several cases from local journals. Results: Ramadan fasting did not dramatically affect the metabolism of lipids, carbohydrates and proteins, or the daily mean of hormonal serum levels. An increase in serum urea and uric acid was frequently reported and this could be attributed to dehydration during this month. Some changes, such as the increase of HDL and apoprotein A1, and the decrease in LDL, could be beneficial for the cardiovascular system. However, the chronobiological studies have shown that Ramadan fasting affects the circadian distribution of body temperature, cortisol, melatonin and glycemia. The amplitude of most of these rhythms decreased and the acrophase shifted. Nocturnal sleep, daytime alertness and psychomotor performance were decreased. Conclusion: The major changes during Ramadan fasting are chronobiological and behavioral. They could be responsible for the high incidence of road traffic accidents and the reduction of working hours during the month of Ramadan.


  

Author Contacts

Rachida Roky, PhD
Department of Pharmacology
Faculty of Medicine and Pharmacy
19, rue Tarik Bnou Ziad, Casablanca (Morocco)
Tel. +212 22 201156, Fax +212 2 471289, E-Mail rroky2001@yahoo.fr

  

Article Information

Published online: September 24, 2004
Number of Print Pages : 8
Number of Figures : 0, Number of Tables : 2, Number of References : 86

  

Publication Details

Annals of Nutrition and Metabolism (European Journal of Nutrition, Metabolic Diseases and Dietetics)

Vol. 48, No. 4, Year 2004 (Cover Date: July-August 2004)

Journal Editor: Elmadfa, I. (Vienna)
ISSN: 0250–6807 (print), 1421–9697 (Online)

For additional information: http://www.karger.com/anm


Article / Publication Details

First-Page Preview
Abstract of Review

Published online: 10/14/2004

Number of Print Pages: 8
Number of Figures: 0
Number of Tables: 2

ISSN: 0250-6807 (Print)
eISSN: 1421-9697 (Online)

For additional information: http://www.karger.com/ANM


Copyright / Drug Dosage

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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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