Relationship between semen quality and tobacco chewing in men undergoing infertility evaluation

Said, Tamer M.; Ranga, Geetha; Agarwal, Ashok

doi:10.1016/j.fertnstert.2005.03.052

Cited by 70 publications

(32 citation statements)

References 27 publications

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“…(Samal et al, 2006). Snuff has proved to decrease sperm quality gradually (sperm counts, motility, morphology and viability) as the use increases (Said et al, 2005). Also, in our study, snuff users had significantly lower sperm concentration, motile sperm number, motile sperm concentration and motile sperm percentage.…”

Section: Educational Level Snuff Consumption and Semen Qualitysupporting

confidence: 55%

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Physical activity, fatness, educational level and snuff consumption as determinants of semen quality: findings of the ActiART study

Pärn

Ruiz

Kallak

et al. 2015

Reproductive BioMedicine Online

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In this study, the association between physical activity and other potential determinants, objectively measured by accelerometry, was examined. Sixty-two men attending an infertility clinic participated in the study. Obese men (body mass index ≥ 30) and those with a waist circumference 102 cm or more had lower semen volume than the other men (P < 0.05). Higher values in sperm parameters were observed in participants who completed university studies and those who did not consume snuff, compared with the other participants (P < 0.05). Finally, men who spent an average number of 10 min-bouts of moderate-to-vigorous physical activity had significantly better semen quality than those who engaged in low or high numbers of bouts of activity (P < 0.05). No associations were found for sedentary or moderate-to-vigorous physical activity time when it was not sustained over 10 min, i.e. not in bouts. Men who have average levels of physical activity over sustained periods of 10 min are likely to have better semen quality than men who engage in low or high levels of such activity. Similarly, high levels of total and central adiposity, low educational level and snuff consumption are negatively related to semen quality.

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Section: Educational Level Snuff Consumption and Semen Qualitysupporting

confidence: 55%

“…Previous studies have shown the harmful effect of tobacco (smoked or chewed) on semen quality (Ramlau-Hansen et al, 2007;Said et al, 2005). The reason why smokeless tobacco could cause harm to semen is probably due to the increased Indicators of semen quality according to snuff consumption.…”

Section: Educational Level Snuff Consumption and Semen Qualitymentioning

confidence: 99%

Physical activity, fatness, educational level and snuff consumption as determinants of semen quality: findings of the ActiART study

Pärn

Ruiz

Kallak

et al. 2015

Reproductive BioMedicine Online

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show abstract

“…With that caveat, azoospermia (no sperm) is more common in tobacco chewers than nonusers 11 and more common in heavier than lighter users. 12 Compared with nonusers of tobacco, chewing tobacco users in India 13,14 and snuff users in Sweden 15 have lower sperm count, concentration, motility, and normal morphology among men seeking infertility treatment. In contrast, among a voluntary sample of 242 male Swedish military conscripts, snuff use was not associated with semen parameters or reproductive hormones.…”

Section: Introductionmentioning

confidence: 99%

Time-to-Pregnancy Associated With Couples’ Use of Tobacco Products

Sapra

Barr

Maisog

et al. 2016

NICTOB

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Introduction: Previous studies suggest female smoking increases time-to-pregnancy (TTP), a couple-dependent reproductive outcome, while associations with male smoking are more ambiguous. Furthermore, despite small increases in smokeless tobacco use in the United States, no prior study has evaluated TTP among smokeless tobacco users. Methods: Using population-based sampling in 16 counties in Michigan and Texas, 501 couples discontinuing contraception to become pregnant were followed until positive pregnancy test or 12 months of trying. Participants were interviewed on lifetime and current cigarette, cigar, and chew/snuff (smokeless) use and provided blood samples for quantification of heavy metals and cotinine. Fecundability odds ratios (FORs) and 95% confidence intervals (95% CIs) were estimated, adjusted for demographics/lifestyle. FORs less than 1 reflect longer TTP. Results: Eleven percentage of females and 15% of males smoked cigarettes. Among men, 14% smoked cigars, 9% used snuff, and 2% used chew. Compared with never tobacco users, male (FOR: 0.41, 95% CI: 0.24, 0.68) and female (FOR: 0.53, 95% CI: 0.33, 0.85) smoking were individually associated with longer TTP; males' smoking remained significant (FOR: 0.46, 95% CI: 0.27, 0.79) when modeling partners together. Cadmium levels were higher in smokers than smokeless tobacco and never users; adjusting for cadmium attenuated the cigarette-TTP association, particularly among women. TTP was shorter among smokeless tobacco users relative to smokers (FOR: 2.86, 95% CI: 1.47, 5.57). Conclusions: Compared with never users, smokeless tobacco did not alter TTP in our cohort; however, TTP was shorter compared with smokers. We observed longer TTP in male and female smokers; cadmium may partially contribute. Implications: Both partners' preconception smoking contributed to longer TTP, highlighting the importance of both partners' lifestyles in healthy reproduction and underscores the need for couple-based preconception guidance. The male's contribution is a new finding. Higher cadmium levels may partially contribute to longer TTP in smokers, particularly among females. Though we do not observe longer TTP among a small sample of smokeless tobacco users compared with never tobacco users, we observe shorter TTP compared with smokers. Further work is needed to more thoroughly delineate the relationship between smokeless tobacco use and TTP and possible mechanisms of tobacco use's effects on reproduction.

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“…Apart from genetic factors, environmental and lifestyle factors have been suggested to influence semen quality. These include seasonal variations in temperature (3,4), smoking (5)(6)(7)(8), alcohol intake (9,10), and antibiotic therapy (11,12). In addition, geographic differences in semen quality have been described (13), which also indicates that semen quality might be influenced by lifestyle and environmental factors (14).…”

mentioning

confidence: 99%

Healthy overweight male partners of subfertile couples should not worry about their semen quality

Duits

Wely

Veen

et al. 2010

Fertility and Sterility

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Relationship between semen quality and tobacco chewing in men undergoing infertility evaluation

Cited by 70 publications

References 27 publications

Physical activity, fatness, educational level and snuff consumption as determinants of semen quality: findings of the ActiART study

Physical activity, fatness, educational level and snuff consumption as determinants of semen quality: findings of the ActiART study

Time-to-Pregnancy Associated With Couples’ Use of Tobacco Products

Healthy overweight male partners of subfertile couples should not worry about their semen quality

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