kaberett: Overlaid Mars & Venus symbols, with Swiss Army knife tools at other positions around the central circle. (Default)
kaberett ([personal profile] kaberett) wrote in [community profile] vaginapagina2014-08-29 04:18 pm
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Effects of lubricants on fertility/sperm motility

Hi!

So Because Of Reasons I just ended up doing a quick bit of research on how much we know about the effects of lubricants on sperm and therefore on trying to conceive. All links go to paywalled articles, but I'm pulling the info from the publically-viewable abstracts (can read in more depth if anyone's keen for me to do so).

A 1998 in vitro study found that all the forms of lube they tested had a negative effect on sperm motility. In 2011 an in vitro comparison of "nonspermicidal" lubricants found that Felis, Replens, and Aquasonic Gel had negative effects on sperm, but Pre-Seed (... what a terrible name) was fine. In April we've got another in vitro study comparing a wider range of lubricants (modified human tubal fluid (mHTF) control and in 10% Pre-Seed, Astroglide, and KY products (Sensitive, Warming, and Tingling) and baby, canola, sesame, and mustard oils), again finding that of the commercially-produced lubricants Pre-Seed and baby oil were the least bad for sperm, with mustard oil having an... interesting effect. Yet Another In Vitro Study (March 2014, comparing Sylk, Conceive Plus, glycerol (!!!), Johnson's Baby Oil, SAGE Culture Oil, Yes, Forelife, MaybeBaby and Pre-Seed) found again that Pre-Seed was best for vitality and Forelife was worst; Pre-Seed was best for motility and Sylk the worst; and none of these lubricants had any impact on DNA integrity; Conceive Plus was apparently the second-best lube for sperm function.

However, in contrast to in vitro studies, a longitudinal in vivo cohort study published in June (i.e. tracking how long it took actual humans using each type of lube to conceive versus humans not using additional lubricants, as opposed to - coarsely - dumping sperm in a warmed petri dish full of lube and videoing them) showed no effect of lubricant choice & use on ability to conceive.

The authors of that last study understandably call for a randomised controlled trial; in the meantime - and I am not a doctor! - I'd suggest that there's little benefit to avoiding lubricant or buying more expensive lubes (the longitudinal cohort study of actual patients showed no effect), but if you do want to minimise that risk consensus seems to be that Pre-Seed (I am still not over the name) is the way to go.
lizcommotion: Lily and Chance squished in a cat pile-up on top of a cat tree (buff tabby, black cat with red collar) (Default)

[personal profile] lizcommotion 2014-08-30 05:16 am (UTC)(link)
From my sex-eductator days I just kept thinking about whether any of these were the kind of lube that would make the condom more likely to break (oil based, right? It's been a few years). And then I realized that there would be no condom if you were trying to conceive and my brain went, "Well, but what if you had like your baby-making lube and your happyfuntimes lube and you didn't want them to get mixed up because you didn't want accidental bonus children or STIs?"

So now I wonder if there's some kind of comparison chart that's like: sexiest/most pleasurable lubes; lubes least likely to reduce sperm flow; lubes least likely to break condoms; lubes least likely to aggravate skin (particularly vaginal skin -- because increased tears = increased infections and also pain is often but not always considered bad).

Also I am not sure why I want this chart because I have about zero desire for children and there is no sperm near my bed. For science?
azurelunatic: A glittery black pin badge with a blue holographic star in the middle. (Default)

[personal profile] azurelunatic 2014-08-30 06:21 am (UTC)(link)
I deeply, deeply appreciate you taking the time to inform me about this. I feel honored friendship.
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[personal profile] sauscony 2014-08-30 06:49 pm (UTC)(link)
One way to keep the cost down for Preseed is to use it topically, rather than with the applicators. I don't think they sell just the applicators and the directions say not to reuse them, but I ran out of the applicators well before the tube was empty. Not that any of this helped me conceive, but it was worth spending the extra money for a special lube both for peace of mind and because it hasn't caused any infections, unlike most of the other lubes I've ever used.