Healthy males produce millions of sperm each day and only a few of these ever go on to fertilise an egg. Despite the abundance of sperm, conception can take up to a year for many couples with healthy gametes sex cells — sperm in males and eggs in females. When sperm quality is reduced, for example sperm are immotile cannot move properly or abnormally shaped which may impair their ability to penetrate the shell of an egg conception may take considerably longer or only be achieved with assisted reproduction technologies. Nutritional intake , including intake of particular vitamins and micronutrients, has also been shown to affect the quality and quantity of the sperm a man produces. Scientists have also devoted attention to studying whether or not taking nutritional supplements protects the health of sperm and if it could be an effective treatment for male factor infertility infertility due to problems with the male.
Did you know semen actually contains nutrients? We tell you 8 seriously BIZARRE semen facts!
Therefore, it is of major clinical and public health importance to investigate whether modifiable lifestyle factors—such as stress, drug use, smoking, alcohol intake, and diet—may influence human fertility. In total, 28 articles were included for qualitative analysis and 15 for quantitative meta-analysis. Sperm total motility was increased by selenium 3.
Objectives: Several animal studies have suggested that vitamin D and the vitamin D receptor VDR play a role in male fertility. The mechanism of action in the testis and the interaction with sperm is unknown. The presence of the VDR on sperm has never been demonstrated.