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Main Article Content
An Evaluation of Impact of Obesity on Male Fertility in Nigerian Men Retrospective Cohort Study at 68 Nigerian Army Reference Hospital Yaba.
Abstract
BACKGROUND: Infertile men contribute an intriguing 30-
50% of infertility burden worldwide. This is even more
worrisome in Nigeria being one of the countries located
in the infertility belt of Africa. The rising trend in male
factor infertility is evidenced by the decrease in seminal
fluid parameters which has since been used as a
surrogate marker of male fecundity.
This study analysed the effect of body mass index on
seminal fluid parameters of men who sought fertility
treatment at 68 Nigerian Army Reference Hospital Yaba,
Lagos. (68 NARHY) over a five-year period.
METHODS: This was retrospective cohort study of the
cases of infertile couples that attended Gynaecology and
Urology clinics of 68 NARHY from 1st January 2019-
December 31st, 2023. A purposely designed proforma
using the WHO manual for the examination of human
semen was used for data collection. Outcome measures
were volume of semen, total sperm number, sperm
concentration, PH, agglutination, liquefaction, motility,
morphology, vitality, and white blood cell count. Data was
analysed using SPSS version 23. Data were presented as
means and proportions. P-value of < 0.05 was used as the
level of significance.
RESULTS: Overall, 562 couples attended Gynaecology and
urology clinics with fertility-related concerns within the
study period with a retrieval rate of 98.3%. Age and BMI
of the participants significantly affected sperm motility,
and morphology. (p-values of 0.001, and 0.002
respectively).
CONCLUSION: Obesity presents a myriad of problems as
regards to male sexuality and fertility. This study has
demonstrated that increasing age has a negative effect
on sperm morphology, and total motility with obesity
also showing additional negative effect on the above and
sperm concentration.
