ISSN 2717-7394

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Abstract


Investigating the effect of paternal body mass index on sperm quality
Aim: To investigate the effect of body mass index (BMI) on the sperm parameters such as semen volume, sperm concentration, and sperm motility and the related clinical outcomes. Material and Method: This cross-sectional retrospective study was done on 1178 participants who attended our hospital's outpatient clinic from January 2014 to April 2020. The participants were divided into three groups according to BMI: 17 participants (1.4%) with BMI of <18.5, 706 participants (59.9%) with BMI of 18.5-24.9, and 455 participants (38.6%) with BMI of 25-29.9. Demographic characteristics and baseline clinical characteristics, including age, BMI, duration of infertility, etc. were compared. The sperm parameters, such as sperm concentration, semen volume and sperm motility, were analyzed according to WHO criteria. The reference range was 1.5(1.4-1.7) ml for semen analysis volume, 15(12-16)x106/ml for semen concentration and 40(38-42)% for motility. The value above this reference range was considered sufficient and the value below this reference range was considered insufficient. Results: The mean age of the participants was 35.8 (±0.7) years. The mean BMI of the participants was 24.04 (±2.8) kg/m2. The mean volume of semen was 3.4(±1.5) ml, the mean sperm concentration was 55.7 (±26.9)x106, and the mean semen motility was 45.7 (±5.6). There is a very week positive correlation between paternal BMI and semen concentratıon (0.01). BMI of the men in a range of 18.5-24.9 was significantly associated with decreased odds of semen volume (OR: 0.46,95%CI: 0.24-0.87). BMI of the men in a range of 18.5-24.9 was significantly associated with increased odds of sperm motility (OR: 4.92,95%CI: 1.01-23.9). Conclusion: In the present study, increased paternal BMI is associated with increasing semen concentration, but it did not have a negative effect on the semen volume, sperm motility and quality.

Keywords
Paternal BMI, Sperm concentration, Sperm motility, Sperm quality



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