The effect of the lunar cycle on frequency of births: A retrospective observational study in Indian population

Bharati, Saswata; Sarkar, M. Z. I.; Haldar, Partha; Jana, Swapan Kumar; Mandal, Shramana

doi:10.4103/0019-557x.99913

Cited by 18 publications

(12 citation statements)

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“…On the other hand, a study by Abell and Greenspan, 19 on 11691 deliveries in 51 lunar cycles, shows no correlation between birth rate and the phases of the Moon. Data provided by other Authors, 20 with a cohort study of the same amount, has not recorded statistically significant differences in the frequency of deliveries during the various phases of the lunar cycle, regardless of the type of delivery. Data provided by Joshi et al, 21 Periti et al 22 and Romero Martinez et al 23 seems to be conclusive: they showed that there was no statistically significant difference between the frequency of the deliveries during full Moon days compared to other days, concluding that the analysis of the evidence provided does not support the theory which states that the full Moon phase is related to an increase in the frequency of the deliveries.…”

Section: Discussionmentioning

confidence: 74%

“…Our data do not find agreement with the weekly rhythm, nor with the annual rhythm or with the Synodic lunar month as defined in the study of Guillon et al, 16 considered the largest sample size for study (5927978 cases) and span (6 years); on the contrary, our conclusions agree with those given by numerous other studies found in literature. [19][20][21][22][23]…”

Section: Discussionmentioning

confidence: 99%

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Analysis of the Influence of Lunar Cycle on the Frequency of Spontaneous Deliveries: A Single-centre Retrospective Study

Laganà

Burgio²,

Retto

et al. 2015

Kathmandu Univ. Med. J.

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Background Man, since ancient times, has been convinced of, and has researched scientific evidence that the barometric and gravitational forces play an important role in structural and biological variation of the planets, influencing the various forms of life. In particular, the synergistic relationships between variations in atmospheric pressure and gravitational forces on human gestation period have been the subject of rigorous observations and statistical calculations, which have not led to a universal conclusion in literature.Objectives The aim of our work was to check whether there is a higher incidence of spontaneous deliveries, during the periods of full Moon than during the other phases of the Moon.Methods We performed a retrospective analysis of 327 non-induced vaginal deliveries in a year, divided by month. We subsequently analyzed the incidence of these deliveries during periods of full Moon Vs other lunar phases.Results We evidenced a statistically significant difference between the annual total spontaneous deliveries happened in full Moon periods Vs all other Moon phases (T= 2,3946; p=0,0256). However, we reported a discordant trend of deliveries in full Moon period, depending on each considered month.Conclusion Since these differences were found both in increase and decrease, it is unacceptable the assumption of a linear correlation between periods of full Moon and increased frequency of spontaneous deliveries. For this reason, our data allow us to conclude that there is no need to increase the number of doctors and midwives in obstetric units during these periods.Kathmandu University Medical Journal Vol.12(4) 2014; 233-237

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Section: Discussionmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Analysis of the Influence of Lunar Cycle on the Frequency of Spontaneous Deliveries: A Single-centre Retrospective Study

Laganà

Burgio²,

Retto

et al. 2015

Kathmandu Univ. Med. J.

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“…In human, relationship of obstetric delivery with lunar cycle has been studied and discussed. Although some studies showed a positive association [2,15], most of the studies demonstrated no association between them [3,16–21]. Recently, Marco-Gracia performed a retrospective cohort analysis on 23,689 spontaneous deliveries within the home for 1484 lunar cycles between the years 1810 and 1929 in rural Spanish villages.…”

Section: Discussionmentioning

confidence: 99%

“…In human, an increase on the percentage of deliveries in the full moon and the waning gibbous phases was found [2]. On the contrary, no difference was observed in the frequency of child births during various phase of lunar cycle [3]. A different analysis also demonstrated that there was no predictable influence of the lunar phases on the frequency of child births [4].…”

Section: Introductionmentioning

confidence: 99%

Daily calving frequency and preterm calving is not associated with lunar cycle but preterm calving is associated with weather conditions in Japanese Black cows

et al. 2019

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Several external factors including lunar cycle and weather conditions might be associated with calving conditions. Our objective here was to determine the effects of lunar cycle and weather conditions on calving frequency and the occurrence of preterm calving in Japanese Black cows. Calving records were obtained from 905 farms in Miyazaki Prefecture, Japan. Data were collected from 41,116 calvings. We conducted two studies: Study 1 investigated the effects of lunar cycle and weather conditions on daily calving frequency (DCF) with the observational unit of each day and Study 2 investigated those effects on the occurrence of preterm calving with the observational unit for each calving. Preterm calving was defined by whether or not a cow calving before 280 days of gestation, lower 10th percentile of gestation length of the collected data, and by whether or not a cow calving before 289 days of gestation, median of the gestation length. For Study 1, lunar cycle was not associated with DCF in all cows, in only primiparous cows and in only multiparous cows. As well as lunar cycle, weather conditions such as temperature, diurnal temperature variation, the temperature-humidity index, precipitation amount, barometric pressure, relative humidity and solar radiation, were also not associated with DCF. For Study 2, lunar cycle phases were not associated with the occurrence of preterm calving. However, preterm calving was associated with all of the weather conditions (P < 0.05) except for precipitation amounts and solar radiation. Temperature, the temperature-humidity index and relative humidity were positively associated with the occurrence of preterm calving. In contrast, diurnal temperature variations and barometric pressure were negatively associated with the occurrence of preterm calving. In conclusion, the lunar cycle was not associated with DCF and preterm calving, but the weather conditions were associated with preterm calving.

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“…In this regard, there are some scientific studies with contradictory results. In a study involving almost 10 000 deliveries in India, a relationship between lunar cycle and the frequency of deliveries was not found (Bharati et al, 2012). Similarly, a study conducted in Germany involving over 6000 gestations did not find a correlation between lunar phase and frequency of delivery (Staboulidou et al, 2008).…”

Section: Introductionmentioning

confidence: 93%

Lunar cycles at mating do not influence sex ratio at birth in horses

Aguilar

Cuervo‐Arango

Juliana

2014

Chronobiology International

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It is scientifically demonstrated that lunar cycles have important effects on several biological events. Controversy exists about the lunar influence on human and animal parturition. In addition, in the horse industry, especially in Polo Horse breeders of Argentina and around the world there is a higher demand for female offspring than for males. The objective of this study was to determine whether there is a significant association between the lunar phase at the time of mating and the sex ratio at birth in horses. The Argentinean Stud Book provided information related to all matings registered for Thoroughbred and Arab horses between 2003 and 2011. Statistical associations were tested between dates of matings at different lunar phases or days and sex ratio at birth. A total of 65.535 gestations were studied. Overall, sex ratio at birth resulted in 33.396 fillies (50.96%) and 32.139 colts (49.04%). The percentages of males and females at birth were not statistically different amongst the different lunar phases or days. We can strongly conclude that managing the breeding dates in relation to lunar cycles in order to manipulate the sex ratio of the offspring is not a viable option in horses.

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The effect of the lunar cycle on frequency of births: A retrospective observational study in Indian population

Cited by 18 publications

References 0 publications

Analysis of the Influence of Lunar Cycle on the Frequency of Spontaneous Deliveries: A Single-centre Retrospective Study

Analysis of the Influence of Lunar Cycle on the Frequency of Spontaneous Deliveries: A Single-centre Retrospective Study

Daily calving frequency and preterm calving is not associated with lunar cycle but preterm calving is associated with weather conditions in Japanese Black cows

Lunar cycles at mating do not influence sex ratio at birth in horses

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