96 men were divided into eight groups in a double-blind, placebo-co3ntrolled study. All of the men received either a composite tablet containing selenium and selected vitamins and minerals (Bio-Selenium + Zinc) or a placebo tablet to be taken daily for a period of three months. This means’ sperm quality was recorded before and after the study and the results showed that the motility of sperm cells in the treatment groups had increased by as much as 80 per cent, but when the men stopped taking the tablet, their sperm cell quality was seen to fall again.

In the UK, it is estimated that 20 per cent of couples living together are childless and the average daily intake of selenium is 31 micrograms per day (the recommended daily intake is 60-70 micrograms) .This study indicates that selenium is a particularly important nutrient in male infertility and should be considered as part of the treatment of childless couples. A daily intake of 130 micrograms per day was found to be the required dosage to produce optimal improvement in sperm quality.