Fructose is a sugar in the semen. It provides energy for the sperm. If it is too low, the sperm will be disadvantaged at swimming to and fertilising an egg.
The absence or low fructose levels in semen may indicate a problem with the seminal vesicles
Male fertility is declining
Carlsen et al analysed a total of 61 studies including 14,947 men from the years 1938 to 1991, for mean sperm density and mean seminal volume. Their results show a significant decline in mean seminal volume from an average of 3.40 ml to 2.75 ml (p=0.027),
This demonstrates a 20-percent drop in volume and a substantial 58-percent decline in sperm production over the last 50 years.
One in six couples (15%), who are attempting to conceive naturally fail to do so in 12 months and are therefore considered “subfertile”. Approximately 40% of these cases are caused by “male factor” infertility. Although the causes are still not well understood, they are often linked to poor diets low in key nutrients and increasing exposure to toxins in our environment.
How to increase male fertility