World over studies are being done by different group of workers to understand the time of deliveries conducted. Surprisingly majority of deliveries were following a pattern, seasonally. Today in this busy world, couples choose comparatively a free time for delivery and preparation for conception is done accordingly. Apart from these, it is clearly shown majority of deliveries are conducted during a particular season. We hypothesised that the change in semen quality during different seasons is responsible for this phenomenon.
Materials and methods:
Present study conducted on semen quality included 12,408 semen samples collected from different laboratories of Bangalore city during 8 years (2000–2007) period of time and were analysed season wise.
Results:
Results showed sperm concentration was significantly lower in monsoon than in winter season. Humidity and pressure influenced sperm count. Forward moving sperms were influenced by temperature and pressure.
Summary:
The study concludes the change in birth rates seen during different season in a year is due to the quality of semen responsible for conception.
ThonneauPMarchandSTallecA, et al. Incidence and main causes of infertility in a resident population (1 850 000) of three French regions (1988–1989)*. Hum Reprod1991; 6: 811–816.
2.
AgarwalAMulgundAHamadaA, et al. A unique view on male infertility around the globe. Reprod Biol Endocrinol2015; 13: 37–40.
3.
RatnanSSChewPCTTsakokM.Experience of a comprehensive infertility clinic in the Department of Obstetrics and Gynecology, University of Singapore. Singap Med J1976; 17(3): 157–159.
4.
ButtFAkramN.Semen analysis parameters: experiences and insight into male infertility at a tertiary care hospital in Punjab. J Pak Med Assoc2013; 63(5): 558–562.
5.
DorJHomburgRRabauE.An evaluation of etiologic factors and therapy in 665 infertile couples. Fertil Steril1977; 28(7): 718–722.
6.
SemmKBrandlEMettlerL.Vacuum insemination cap. In: HafezESE (ed.) Human semen and fertility regulation in men. St. Louis, MO: The CV Mosby Company, 1976, pp.439–441.
7.
ChowdhuryTAKhanamSPAkhterN, et al. Profile of 350 couples attending the infertility clinic at P.G. hospital. In: Fifth contributors conference, Dacca, Bangladesh, 1981, p.85. Dacca: Bangladesh Fertility Research Programme.
8.
ChandleyAC. Cytogenetics of infertile men. In: ESEHafez (ed.) Human semen and fertility regulation in men. St. Louis, MO: The CV Mosby Company, 1976, pp.419–428.
9.
SoutoulJHBergerCHomassonN, et al. Marital sterility and etiological study and therapeutic results. Rev Fr Gynecol Obstet1976; 71: 79–89.
10.
BiradarK.Male factor in infertility: study from a tertiary care hospital. Int J Reprod Contracept Obstet Gynecol2016; 5(6): 2022–2025.
11.
PrasadBSSkandhanKPSinghG.Human semen study around and away from gold mine area. Urologia2011; 78: 293–296.
12.
MehraBLSkandhanKPPrasadBS, et al. Male infertility rate: a retrospective study. Urologia2018; 85: 22–24.
13.
ChaitraliGSantruptiKNiranjanKSkandhanKPSukumarNPrasadBS. Male infertility rate in Belagavi, Karnataka, India. Int J Infertil Fetal Med2019; 10: 1–3.
14.
SkandhanKPVadodariaHLangaliaD, et al. Incidence of male factor in involuntary infertility. Andrologia1982; 14: 328–330.
15.
KumarNChoudhariARSinghAK.Prevalence of male factor infertility in last ten years at a rural tertiary care centre of central India: a retrospective analysis. Ind J Obstet Gynaecol Res2015; 2: 132–136.
16.
SkandhanKPPatelIAMehtaYB.Rate of involuntary infertility among male partners. Ital J Med1986; 2: 71–72.
17.
JairajpuriZSRanaSAliMA, et al. Patterns of semen analysis: Experiences of a laboratory catering to semi urban population of Delhi. Banglad J Med Sci2017; 16(2): 314–319.
18.
PalRGandotraN.The effect of seasonal variation on the delivery rate: a retrospective study. Int J Reprod Contracept Obstet Gynecol2018; 7: 1101–1103.
19.
BobakMGjoncaA.The seasonality of live birth is strongly influenced by socio-demographic factors. Hum Reprod2001; 16: 1512–1517.
20.
SkandhanKValsaJSumangalaB, et al. Level of copper in human split ejaculate. Urologia2017; 84: 51–54.
21.
ValsaJSkandhanKPGusaniP, et al. Effect of daily ejaculation on semen quality and calcium and magnesium in semen. Andrologia2013; 11: 94–99.
22.
SkandhanKPSkandhanSPandyaCB, et al. Daily ejaculates: level of zinc and copper in seminal plasma. Necessity for abstinence prior to semen collection. Infertility1985; 8: 279–291.
23.
ValsaJSkandhanKPGusaniPH, et al. Quality of 4-hourly ejaculates–levels of calcium and magnesium. Andrologia2013; 45: 10–17.
24.
ValsaJSkandhanKPSumangalaB, et al. Time bound changes (in 24 h) in human sperm motility and level of calcium and magnesium in seminal plasma. Alex J Med2016; 52: 235–241.
25.
SantiDMagnaniEMichelangeliM, et al. Seasonal variation of semen parameters correlates with environmental temperature and air pollution: a big data analysis over 6 years. Environ Pollut2018; 235: 806–813.
26.
VeenaKSkandhanKPSirajMVP, et al. Effect of visible light on human sperm motility. Urologia 2012; 79: 266–270.
27.
BeckerS.Seasonal patterns of births and conception throughout the world. Adv Exp Med Biol1991; 286: 59–72.
28.
MascarenhasMNFlaxmanSRBoermaT, et al. National, regional, and global trends in infertility prevalence since 1990: a systematic analysis of 277 health surveys. PLoS Med2012; 9: e1001356.
29.
RoennebergTAschoffJ. Annual rhythm of human reproduction: I. Biology, sociology, or both?J Biol Rhythms1990; 5: 195–216.
30.
CharlesQC. In Which Month Are the Most Babies Born? Live Sci, August19, 2022.
31.
LamDAMironJA.Global patterns of seasonal variation in human fertility. Ann N Y Acad Sci1994; 709: 9–28.
32.
LamDAMironJA.The effects of temperature on human fertility. Demography1996; 33: 291–305.
33.
EllisonPTValeggiaCRSherryDS.Chapter 13. Human birth seasonality. In: DKBrockman (ed.) Seasonality on primates studies of living and extinct human and non-human primates. Cambridge: Cambridge University Press, 2005, pp. 379–399.
34.
AnandKKumarGKantS, et al. Seasonality of births and possible factors influencing it in a rural area of Haryana, India. Indian Pediatr2000; 37: 306–312.
35.
AyeniO.Seasonal variation of births in rural southwestern Nigeria. Int J Epidemiol1986; 15: 91–94.
36.
MatsudaSKahyoH.Geographical differences and time trends in the seasonality of birth in Japan. Int J Epidemiol1994; 23: 107–118.
37.
BernardRPBhattRVPottsDM, et al. Seasonality of birth in India. J Biosoc Sci1978; 10: 409–421.
38.
StoeckelJChoudhuryAKMA. Seasonal variation in births in rural East Pakistan. J Biosoc Sci1972; 4: 107–116.
39.
MathersCDHarrisRS.Seasonal distribution of births in Australia. Int J Epidemiol1983; 12: 326–331.
40.
CowgillUM.The season of birth in man. Man1966; 1: 232–240.
41.
CowgillUM.Season of birth in man: contemporary situation with special reference to Europe and the Southern Hemisphere. Ecology1966; 47: 614–623.
42.
CowgillUM.The season of birth in man: the Northern New World. Kroeber Anthropology Society Papers No. 35. California: Berkeley, 1966.
43.
HalliSS.The seasonality of births in Canada. J Biosoc Sci1989; 21: 321–327.
44.
ErhardtCLNelsonFGPakterJ.Seasonal patterns of conception in New York City. Am J Public Health1971; 61: 2246–2258.
45.
PrasadBGSrivastavaRNBhushanV, et al. A study of seasonal variation of births at maternity hospitals of some medical colleges in India. Ind J Med Res1969; 57: 718–729.
46.
TalwarIUpadhyayRSharmaK.The seasonality of births in Chandigarh with special reference to climatic and cultural factors. Indian Anthropol1986; 16: 23–32.
47.
YadavaKNDubeDMarwahSM.A study of seasonal trends in delivery and medical termination of pregnancy. J Obstet Gynaecol India1979; 29: 256–257.
48.
CarlsenEGiwercmanAKeidingN, et al. Evidence for decreasing quality of semen during past 50 years. BMJ1992; 305: 609–613.
49.
SwanSHElkinEPFensterL.The question of declining sperm density revisited: an analysis of 101 studies published 1934-1996. Environ Health Perspect2000; 108: 961–966.
50.
Alvin PaulsenCBermanNGWangC. Data from men in greater Seattle area reveals no downward trend in semen quality: further evidence that deterioration of semen quality is not geographically uniform. Fertil Steril1996; 65: 1015–1020.
51.
GyllenorgJSkakkeebaekNENielsenNC, et al. Secular and seasonal changes in semen quality among young Danish men: a statistical analysis of semen samples from 1927 donor candidates during 1977-1995. Int J Androl1999; 22: 28–36.
52.
SantiDVezzaniSGranataAR, et al. Sperm quality and environment: a retrospective, cohort study in a Northern Province of Italy. Environ Res2016; 150: 144–153.
53.
OmbeletWMaesMVandeputH, et al. Chronobiological fluctuations in semen parameters with a constant abstinence period. Arch Androl1996; 37: 91–96.
54.
ChenZTothTGodfreyBaileyL, et al. Seasonal variation and age-related changes in human semen parameters. J Androl2013; 24: 226–231.
55.
CentolaGMEberlyS.Seasonal variations and age-related changes in human sperm count, motility, motion parameters, morphology, and white blood cell concentration. Fertil Steril1999; 72: 803–808.
56.
HaidlGJungASchillWB.Ageing and sperm function. Hum Reprod1996; 11: 558–560.
57.
SchwartzDMayauxM-JSpiraA, et al. Semen characteristics as a function of age in 833 fertile men. Fertil Steril1983; 39: 530–535.
58.
GallardoESimónCLevyM, et al. Effect of age on sperm fertility potential: oocyte donation as a model. Fertil Steril1996; 66: 260–264.
59.
ZhouYMengTWuL, et al. Association between ambient temperature and semen quality: a longitudinal study of 10 802 men in China. Environ Int2020; 135: 105364.
60.
SuominenJVierulaM.Semen quality of Finnish men. Br Med J1993; 306: 1579.
61.
AugerJKunstmannJMCzyglikF, et al. Decline in semen quality among fertile men in Paris during the past 20 years. New Engl J Med1995; 332: 281–285.
62.
MendiolaJJørgensenNAnderssonAM, et al. Reproductive parameters in young men living in Rochester, New York. Fertil Steril2014; 101: 1064–1071.
63.
LevineRJBordsonBLMathewRM, et al. Deterioration of semen quality during summer in New Orleans. Fertil Steril1988; 49: 900–907.
64.
Saint PolPBeuscartRLeroy-MartinB, et al. Circannual rhythms of sperm parameters of fertile men. Fertil Steril1989; 51: 1030–1033.
65.
AndolzPBielsaMAAndolzA.Circannual variation in human semen parameters. Int J Androl2001; 24: 266–271.
66.
ReinbergASmolenskyMHHallekM, et al. Annual variation in semen characteristics and plasma hormone levels in men undergoing vasectomy. Fertil Steril1988; 49: 309–315.
67.
GodatwarPSkandhanKPPrasadBS, et al. Within subject variation of seminal parameters after 5 days of abstinence. Int J Life Sci Pharma Res2022; 12: 48–54.
68.
AlvarezCCastillaJAMartínezL, et al. Biological variation of seminal parameters in healthy subjects. Hum Reprod2003; 18: 2082–2088.
69.
HenkelRMaassGSchuppeHC, et al. Seasonal changes of neutral alpha-glucosidase activity in human semen. J Androl2006; 27: 34–39.
70.
CarlsenEPetersenJHAnderssonAM, et al. Effects of ejaculatory frequency and season on variations in semen quality. Fertil Steril2004; 82: 358–366.
71.
De GiorgiAVolpiRTiseoR, et al. Seasonal variation of human semen parameters: a retrospective study in Italy. The journal of Bological and Medical Rhythm Research2015; 32: 711–716.
72.
LevineRJMathewRMChenaultCB, et al. Differences in the quality of semen in outdoor workers during summer and winter. New Engl J Med1990; 323: 12–16.
73.
LevineRJ.Seasonal variation of semen quality and fertility. Scand J Work Environ Health1999; 25Suppl 1: 34–37; discussion 76.
74.
IvellR.Lifestyle impact and the biology of the human scrotum. Reprod Biol Endocrinol2007; 5: 15.
75.
HjollundNHStorgaardLErnstE, et al. Impact of diurnal scrotal temperature on semen quality. Reprod Toxicol2002; 16: 215–221.
76.
ThonneauPDucotBBujanL, et al. Effect of male occupational heat exposure on time to pregnancy. Int J Androl1997; 20: 274–278.
77.
HjollundNHIBondeJPEJensenTK, et al. Diurnal scrotal skin temperature and semen quality. Int J Androl2000; 23: 309–318.
78.
SkandhanKP.Psuedo male infertility: traditionary, customary and occupational hazards. Urologia1999; 66: 202–204.
79.
HamerezaeeMDehghanSFGolbabaeiF, et al. Assessment of semen quality among workers exposed to heat stress: a cross-sectional study in a steel industry. Saf Health Work2018; 9: 232–235.
80.
SheinerEKSheinerEHammelRD, et al. Effect of occupational exposures on male fertility: literature review. Ind Health2003; 41: 55–62.
81.
BondeJP.Semen quality in welders exposed to radiant heat. Br J Ind Med1992; 49: 5–10.
82.
MomenMNAnanianFBFahmyIM, et al. Effect of high environmental temperature on semen parameters among fertile men. Fertil Steril2010; 93: 1884–1886.
83.
MortimerDTempletonAALentonEA, et al. Annual patterns of human sperm production and semen quality. Arch Androl1983; 10: 1–5.
84.
DengZChenFZhangM, et al. Association between air pollution and sperm quality: a systematic review and meta-analysis. Environ Pollut2016; 208: 663–669.
85.
SkandhanKPMazumdarBN.High incidence of male involuntary infertility. Infertility1982; 5: 167–174.
