Fizzy drinks link to male infertility30th March 2010
Men who have a daily intake of fizzy drinks may be in danger of causing themselves reproductive harm.
A recent Danish study found that men who drink fizzy drinks have lower sperm counts than men who do not, putting them at greater risk of eventually being infertile.
In Denmark, men have increased their consumption of fizzy drinks in the past few decades, so the researchers wanted to see how this increase could potentially affect people on the whole.
For the study, researchers asked 2,500 young men about the types of fluid they drank, then measured their sperm counts.
Men who did not drink fizzy drinks had 50 million sperm for every millilitre of semen, whereas people who did had about 30% less sperm per millilitre.
The study subjects included 93 men who drank over one litre of fizzy drinks per day, and whose sperm counts averaged about 35 million sperm per millilitre.
Study leader Tina Kold Jensen of Rigshospitalet in Copenhagen, Denmark said that she felt it was important to note that the men who drank a lot of cola were also different in many other ways.
On the whole, men who drank fizzy drinks also tended to have less healthy lives than those who did not.
The researchers were also fairly certain that the results of their study did not have to do with caffeine levels.
Jensen said that only a few studies had looked at the impact of caffeine on male reproductive health, that they had focused on a narrow range of infertile subjects, and that findings had conflicted.
Fabio Pasqualotto of the University of Caxias do Sul in Brazil, who did not take part in the study, said that he imagined the change in sperm counts had more to do with lifestyle than with soda drinking.
The earliest fizzy drinks were manufactured in the late 18th century, when the method of carbonation was developed.
The consumption of fizzy drinks is also linked to higher urinary concentrations of Bisphenol A (BPA), a plastic which has been linked to fertility problems in men.
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Title: Fizzy drinks link to male infertility
Author: Luisetta Mudie
Article Id: 14529
Date Added: 30th Mar 2010