Women are born with all the eggs they'll ever have. It's different for men. Men produce sperm all day, every day - throughout their lives
So how to add a bit of zip to that production line?
According to a study published in the journal Human Reproduction, men who took vitamin D tended to have more motile – or viable and moving – spermatozoa.
The Dutch team came to this conclusion after analyzing samples taken from 300 healthy men, none of whom were known to have fertility issues. Scientists noted that higher blood serum levels of the vitamin appeared to correlate with increased motility.
While the group noted that it is unclear whether or not vitamin D actually speeds up sperm, they did suggest that the nutrient is vital for reproductive health. The team added that further research may determine if dietary supplements may benefit men who are having reproductive problems.
Previous studies have shown that improving levels of calcium and vitamin D in the blood can improve fertility in vitamin-deficient male laboratory rodents.
