Why S-ex Lubricants Branded ‘Fertility Friendly’ Could Be Harmful -Researchers

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Why S-ex lubricants branded ‘Fertility Friendly’ Could Be Harmful -Researchers

A study carried out by researchers from the University of Pretoria, South Africa, has revealed that some lubricants dubbed ‘fertility friendly’ pose serious danger to sperm and can adversely affect conception.

They warned that it can reduce motility, which is the ability of the sperm to swim in the right direction.

The over 10 months study was recently published in the peer-reviewed, International Journal of Gynaecology & Obstetrics.

The researchers said they compared the effectiveness of five different lubricants namely Optilube, Pre-Seed, Yes Baby, olive oil and egg white on sperm motility.

According to them, “It was found that these lubricants can reduce the motility – ability of the sperm to swim in the right direction – of the sperm. Olive oil stifled sperm’s ability to spread, whereas egg whites appeared to have no impact on their performance and raw eggs can contain harmful bacteria — including salmonella — and experts do not recommend using them during s-ex.”

The researchers revealed that they tested three branded and two natural s-ex lubricants on 60 semen samples obtained from men attending a private fertility clinic.

In an interview with Daily Mail, UK, the lead author of the study, Johan Markram said the study was important as it highlighted false claims made by producers of such lubricants and the implication of buying into the claims.

“This study is important because it highlights that these so-called sperm-friendly lubricants may actually hinder normal conception,” he added.

To perform the study, Daily Mail reported that samples were collected from men aged from 18 and above at a fertility clinic in Midstream, Gauteng Province.

The researchers went on to divide the samples into six before adding 0.5ml of five lubricants, while leaving one as a negative control sample.

Microscopic cameras were used to measure the speed and movement of the sperm on glass slides using the World Health Organization recommended sperm motility score.

After two hours, it was observed that the sperm mixed with Optilube and Yes Baby scored zero, meaning the sperm had no movement at all, while the sperm mixed with olive oil and Pre-Seed samples scored one meaning that it had movement with no direction.

It was also noted that the sperm mixed with egg white had a score of two, meaning it had a sluggish, progressive motility, while the sperm that was not treated with any lubricant had scores of more than two over the period, which is not statistically higher than egg white.

After 24 hours, the researchers reported that the three branded lubricants and olive oil all had scores of zero meaning that the sperm was not moving at all but the egg white and control groups had a score of one at 24 hours.  After 72 hours all six samples reduced to zero, the study found.

The researchers said their finding refutes claims that the lubes are sperm friendly and enhance fertility.

According to Daily Mail, several companies offer so-called fertility-friendly lubricants, which are marketed as helping couples conceive during intercourse.

It noted that many claimed that they prevent the usual problems associated with using regular lubricants because they are not as acidic, and will therefore not damage the sperm as much.

“Most also do not contain chemicals like parabens — a preservative — which some studies have linked to being harmful to fertility.

“Some have been approved by the US Food and Drug Administration as ‘fertility-friendly’. The category was introduced in 2017,” it stated.

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