For those of you men who like talking on the phone, maybe you should reduce your habit that if you want to have offspring.
Researchers from Queen's University, Canada, found that mobile phone use can reduce sperm quality and led to a decrease in fertility.
The team found that the electromagnetic waves emitted by mobile phones have a relationship of unity with the male hormone.
"Our findings are a bit confusing. We hope to find different results, but the results we found indicate that there could be interesting mechanisms at work," said Dr. Rany Shamoul, the lead researcher, as quoted by the Daily Mail.
The research team found that men who reported using cell phones have higher levels of circulating tetosteron but they also have pelutein hormone levels (luteinizing hormone / LH) was lower.
This hormone is a reproductive hormone released by the pituitary gland in the brain.
The researchers think that the electromagnetic waves emitted by mobile phones can have two actions at the level of male hormones and fertility.
Electromagnetic waves can increase the number of cells in the testes which produce testosterone, however it can also reduce the level of pelutein hormone released by the pituitary gland.
That could hinder a more active testosterone changes, strong form of testosterone that is associated with sperm production and fertility.
Dr Shamloul concluded more in-depth research is needed to examine how precisely where electromagnetic waves affect male fertility.
The study comes just two months after the British mobile phone users are advised by the government to send an SMS or using "hands free" rather than calling.
British Health Department said it would reduce the users from exposure to radiation emitted by the device.
In the first update for Mobile phones and health leaflets Britain since 2005, the health department added more research is needed in long-term influence the use of mobile phones.
They claim there is no "clear evidence of adverse health effects" from use of a cell phone or from phone transmitter.
They added: "As people use only mobile phones for many years a relatively small, HPA (Health Protection Agency) recommends more research be done, particularly to investigate whether there is the possibility of long-term effects."