Abstract
The purpose of this study was to examine platelet aggregation during Ramadan fasting. A group of 20 healthy non-smoking male volunteers were studied, whose mean age was [21 (SD 2.4) years range 19–24]. The average fast was about 15 h. Venous blood samples were taken on 4 different days; 1 day before Ramadan (day 0), then on the 1st, 14th and 28th day of Ramadan. On each of these 4 days, blood samples were taken at 4 p.m. (1 h before the evening meal). Body mass index and platelet count did not change during fasting. Bleeding and coagulation time had increased significantly by the end of Ramadan fasting (P < 0.05, P < 0.005 respectively), but these changes remained within physiological limits. Ramadan fasting induced a reduction in platelet sensitivity to adenosine 5′-diphosphate (ADP) and collagen on days 14 (P < 0.05) and 28 (P < 0.05, P < 0.005 respectively). However, adrenaline-induced platelet aggregation decreased only on day 28 (P < 0.05). This study indicated that Ramadan fasting led to a decrease in the platelet responses of different aggregating agents (ADP, adrenaline and collagen) in vitro. It also led to an increase in bleeding and coagulation time.
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Aybak, M., Türkoğlu, A., Şermet, A. et al. Effect of Ramadan fasting on platelet aggregation in healthy male subjects. Eur J Appl Physiol 73, 552–556 (1996). https://doi.org/10.1007/BF00357678
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DOI: https://doi.org/10.1007/BF00357678