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Islamic Fasting and Health: Difference between revisions
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Other studies, however, have reported no change in body weight during Ramadan (El-Ati, Beji, & Danguir, 1995; Finch, Day, Razak, Welch, & Rogers 1998; Maislos et al., 1993; Maislos, Abou-Rabiah, Zuili, Iordash, & Shany, 1998). In fact, one study carried out in Saudi Arabia reported a significant increase in body weight during Ramadan (Frost & Pirani, 1987). Such variations may be attributable to local custom and food quality. In short, in Islamic communities - as elsewhere - food habits vary according to geography, culture, and socioeconomic factors (Musaiger, 1993; Rashed, 1992). Ramadan is a special month and the variety of foods generally increases (Karaagaoglu & Yucecan, 2000) so, during this period, richer meals and special treats are not uncommon in households that can afford them.<ref name="Morimoto"></ref>}} | Other studies, however, have reported no change in body weight during Ramadan (El-Ati, Beji, & Danguir, 1995; Finch, Day, Razak, Welch, & Rogers 1998; Maislos et al., 1993; Maislos, Abou-Rabiah, Zuili, Iordash, & Shany, 1998). In fact, one study carried out in Saudi Arabia reported a significant increase in body weight during Ramadan (Frost & Pirani, 1987). Such variations may be attributable to local custom and food quality. In short, in Islamic communities - as elsewhere - food habits vary according to geography, culture, and socioeconomic factors (Musaiger, 1993; Rashed, 1992). Ramadan is a special month and the variety of foods generally increases (Karaagaoglu & Yucecan, 2000) so, during this period, richer meals and special treats are not uncommon in households that can afford them.<ref name="Morimoto"></ref>}} | ||
===Sleep Disorders | ===Affect on Circadian Patterns and Sleep Disorders=== | ||
The results of the following study can lead us to conclude that fasting negatively effects an individual's circadian rhythm. As a result, unfavorable side-effects such as lethargy and a lack of motivation, may contribute to a society's lack of productivity: | |||
{{Quote||This change of meal schedule is accompanied with changes in sleep habits, such as delayed and shortened sleep periods, which may affect endocrine and neuroendocrine circadian patterns. Several cardiovascular parameters (i.e., heart rate, blood pressure, vascular tone, and coagulation-fibrinolysis) show circadian pattern. Several studies reported that autonomic activity and melatonin rhtyhmicity may be responsible for circadian patterns of cardiovascular parameters. '''Changes of sleep habit in Ramadan affects autonomic activity and melatonin rhtyhmicity'''. The other negative effects may be that, during fasting patients with cardiovascular disease cannot consume medications, such as anti-ischemic, anti-platelet, anti-hypertensive drugs, and drugs of heart failure on time. Some patients may get admitted to the hospital with cardiovascular symptoms owing to failure of therapy.<ref>"Does Ramadan modify the Circadian Patterns?" - Journal of Postgraduate Medicine, March 2006, Vol. 52 Issue 1 [https://tspace.library.utoronto.ca/bitstream/1807/6924/1/jp06011.pdf pdf]</ref>}} | |||
{{Quote||'''Abstract:''' | {{Quote||'''Abstract:''' | ||
Fasting during Ramadan is distinct from regular voluntary or experimental fasting. This project was conducted to objectively assess the effect of Ramadan fasting on sleep architecture, daytime sleepiness and the circadian cycle of melatonin level. Eight healthy volunteers reported to the Sleep Disorders Center on four occasions for polysomnography and multiple sleep latency tests: 1) an initial visit for adaptation; 2) 2 weeks before Ramadan (BL); and 3,4) during the first and third weeks of Ramadan (R1, R3). Salivary melatonin level was measured using radioimmunoassay. Sleep latency at night was significantly shorter and the amount of rapid eye movement sleep was significantly less, at R3 compared to BL. There was no difference in multiple sleep latency test data between BL and Ramadan. Although melatonin level kept the same circadian pattern at BL, R1 and R3, it had a flatter slope and a significantly lower peak at midnight (00:00) at R1 and R3. This study showed a significant reduction in sleep latency and rapid eye movement sleep during the third week of Ramadan fasting. Otherwise, there was no significant effect of Ramadan on sleep architecture and assessment revealed no increase in daytime sleepiness. Although melatonin level had the same circadian pattern during Ramadan, the level of the hormone dropped significantly from baseline. | Fasting during Ramadan is distinct from regular voluntary or experimental fasting. This project was conducted to objectively assess the effect of Ramadan fasting on sleep architecture, daytime sleepiness and the circadian cycle of melatonin level. Eight healthy volunteers reported to the Sleep Disorders Center on four occasions for polysomnography and multiple sleep latency tests: 1) an initial visit for adaptation; 2) 2 weeks before Ramadan (BL); and 3,4) during the first and third weeks of Ramadan (R1, R3). Salivary melatonin level was measured using radioimmunoassay. Sleep latency at night was significantly shorter and the amount of rapid eye movement sleep was significantly less, at R3 compared to BL. There was no difference in multiple sleep latency test data between BL and Ramadan. Although melatonin level kept the same circadian pattern at BL, R1 and R3, '''it had a flatter slope and a significantly lower peak at midnight (00:00) at R1 and R3.''' '''This study showed a significant reduction in sleep latency and rapid eye movement sleep during the third week of Ramadan fasting.''' Otherwise, there was no significant effect of Ramadan on sleep architecture and assessment revealed no increase in daytime sleepiness. Although melatonin level had the same circadian pattern during Ramadan, the '''level of the hormone dropped significantly from baseline.'''<ref>Ahmed BAHAMMAM/Sleep Disorders Center, Respiratory Unit, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia</ref>}} | ||
===Daytime Drowsiness, Alertness and Cognition=== | |||
Naturally, a fast would indicate that individuals are ingesting less food. But the following two studies reveal that the decrease in the number of meals that are eaten directly disturbs normal sleep habits and thereby increases daytime drowsiness. | Naturally, a fast would indicate that individuals are ingesting less food. But the following two studies reveal that the decrease in the number of meals that are eaten directly disturbs normal sleep habits and thereby increases daytime drowsiness. | ||
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The physical fatigue associated with fasting results in impairment of cognitive function, as shown by performance in flicker fusion tests. <ref>Ali MR, Amir T. Effects of fasting on visual flicker fusion. | The physical fatigue associated with fasting results in impairment of cognitive function, as shown by performance in flicker fusion tests. <ref>Ali MR, Amir T. Effects of fasting on visual flicker fusion. | ||
Percept Mot Skills 1989;69:627-31</ref> | Percept Mot Skills 1989;69:627-31</ref> | ||
===Lactating women=== | ===Lactating women=== | ||