Infertility and problems of impaired fecundity have been a concern through ages and is also
a significant clinical problem today, which affects 8–12% of couples worldwide. Of all …

Although semen quality is an important determinant of fertility, defining clear thresholds for
normal ranges has proven difficult. According to'time to pregnancy'studies, fecundity starts to …

Background: Infertility causes change according to local demographics. There is thus the
need to find the causes of infertility in context to local population to aid and direct …

STUDY QUESTION Are temporal trends and values of semen quality parameters in France
identifiable in partners of totally infertile women? SUMMARY ANSWER Among a sample of …

Reports regarding the changes in sperm concentration in different counties of the world are
inconsistent. Furthermore, the reports that sprung up from specific epidemiological and …

OBJECTIVE: To identify the factors associated with male semen quality from many socio-
psycho-behavioral factors. DESIGN: Medline/PubMed, EMBASE, and CNKI were searched …

Over the past four decades, studies of various designs have reported spatial and temporal
trends in human semen quality. Several standardized-methodology studies in …

Carnitine is essential for energy metabolism and spermatozoa maturation. Combining L‐
carnitine and L‐acetylcarnitine with micronutrients has been investigated as a treatment for …

This review comprehensively summarizes the effects of more than 15 mostly used pesticides
on male reproductive physiology, as recent experimental and epidemiological research …

Background Many countries and regions have experienced male fertility problems due to
various influencing factors, especially in less developed countries. Unlike female infertility …