Fasting does not precipitate onset of labour.
1Department of Obstetrics and Gynecology, Edith Wolfson Medical Center, Holon, Israel. drslurie@hotmail.com
Summary
This study investigated if fasting during Yom Kippur increases labor rates. While some birth rate changes were observed around Yom Kippur and other festivals, no clear association was found between a 1-day fast and increased births.
Area of Science:
- Obstetrics and Gynecology
- Reproductive Health
- Perinatal Epidemiology
Background:
- The 'Yom Kippur effect' is a hypothesized phenomenon suggesting that fasting may precipitate labor.
- Previous studies have explored potential links between religious fasting and birth rates, with varying conclusions.
- Understanding factors influencing labor onset is crucial for perinatal care and resource planning.
Purpose of the Study:
- To examine the association between fasting during Yom Kippur and labor onset.
- To compare birth rates during and after Yom Kippur with other religious festivals (Tisha B'Av, Passover) with different fasting protocols.
- To evaluate the validity of the 'Yom Kippur effect' in a contemporary population.
Main Methods:
- Retrospective observational study design.
- Analysis of birth data over a 4-year period, comparing rates around Yom Kippur, Tisha B'Av, and Passover.
- Statistical comparison of birth rates during fasting periods and post-fasting periods against mean birth rates.
Main Results:
- A statistically significant increase in births was observed one day after Yom Kippur (p = 0.023).
- A significant decrease in births occurred during Tisha B'Av (p = 0.044), with a significant increase two days after (p = 0.009).
- A significant decrease in births was noted two days prior to the first day of Passover (p = 0.034).
Conclusions:
- The study did not confirm a consistent association between the 1-day Yom Kippur fast and an increased birth rate in the 24-hour period following the fast.
- Observed birth rate fluctuations around religious festivals suggest complex, multifactorial influences on labor onset.
- Further research is needed to elucidate the relationship between fasting, stress, and reproductive events.
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