Abstract
BackgroundNo study to date has focused on the impact of Greek Orthodox Christian fasting on serum lipoproteins and obesity yet.Methods120 Greek adults were followed longitudinally for one year. Sixty fasted regularly in all fasting periods (fasters) and 60 did not fast at all (controls). The three major fasting periods under study were: Christmas (40 days), Lent (48 days) and Assumption (August, 15 days). A total of 6 measurements were made during one year including pre- and end-fasting blood collection, serum lipoprotein analyses and anthropometric measurements.ResultsStatistically significant end-fasting total and LDL cholesterol differences were found in fasters. Fasters compared to controls presented 12.5% lower end-total cholesterol (p < 0.001), 15.9% lower end-LDL cholesterol (p < 0.001) and 1.5% lower end-BMI (p < 0.001). The end- LDL/HDL ratio was lower in fasters (6.5%, p < 0.05) while the change in end- HDL cholesterol in fasters (4.6% decline) was not significant. Similar results were found when the pre- and end-fasting values of fasters were compared. No change was found in control subjects.ConclusionsAdherence to Greek Orthodox fasting periods contributes to a reduction in the blood lipid profile including a non-significant reduction in HDL cholesterol and possible impact on obesity.
Highlights
No study to date has focused on the impact of Greek Orthodox Christian fasting on serum lipoproteins and obesity yet
Statistical methods Differences in gender, tobacco use, educational level and apolipoprotein E distribution were compared using χ2 analysis, while differences in age were compared by ANOVA analysis
Effect of fasting on end-fasting values Multiple Linear Stepwise Regression Analysis indicated that fasting is a significant determinant for end-total cholesterol, end-LDL cholesterol, end-LDL/HDL ratio and end-Body Mass Index (BMI) (Table 3), showing that fasters have lower levels of these variables
Summary
No study to date has focused on the impact of Greek Orthodox Christian fasting on serum lipoproteins and obesity yet. There are three principal fasting periods per year: i) a total of 40 days preceding Christmas (meat, dairy products and eggs are not allowed, while fish and olive oil are allowed except on Wednesdays and Fridays), ii) a period of 48 days preceding Easter (Lent). Olive oil consumption is allowed only at weekends, iii) a total of 15 days in August (the Assumption) when the same dietary rules apply as for Lent with the exception of fish consumption which is allowed only on August 6th. Seafood such as shrimps, squid, cuttlefish, octopus, lobsters, crabs as well as snails are allowed on all fasting days throughout the year. The Greek Orthodox fasting practices can be characterized as requiring a periodic vegetarian diet including fish and seafood
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