Background Semen quality, a predictor of male fertility, has been suggested declining
worldwide. Among other life style factors, male coffee/caffeine consumption was …

BACKGROUND A few studies have investigated the association between male caffeine
consumption in adult life and semen quality with conflicting results, but so far no studies …

The authors examined the association between semen quality and caffeine intake among
2,554 young Danish men recruited when they were examined to determine their fitness for …

Objective The aim was to investigate whether coffee or caffeine consumption is associated
with reproductive endpoints among women with natural fertility (ie, time to pregnancy [TTP] …

Much of the literature on the impact of male caffeine and alcohol intake on reproductive
outcomes has utilized semen quality as a proxy for male fertility, although semen parameters …

MATERIALS AND METHODS The study population included a total of 546 men of couples
seen at the University of North Carolina infertility clinic between 1978 and 1982. The …

STUDY QUESTION Is consumption of sugar-sweetened beverages (SSB) associated with
semen quality? SUMMARY ANSWER Higher consumption of SSB was associated with …

BACKGROUND: The trend for men to have children at older age raises concerns that
advancing age may increase the production of genetically defective sperm, increasing the …

Background Poor sperm quality can negatively affect embryonic development and IVF
outcome. This study is aimed at investigating the influence of various lifestyle factors on …

Much has been published about smoking and alcohol intake influencing male fertility, sperm
parameters and reproductive outcome. However, there is no conclusive agreement about …