Yeast & Yoghurt and Spring & Sperm
Popular wisdom says women should use yoghurt or lactobacillus (taken by mouth or inserted into the vagina) to prevent yeast infections caused by taking antibiotics. Here are the conclusions of a study that examined the effectiveness of this treatment:
According to these results, the chances of a significant reduction in vulvovaginitis with oral or vaginal lactobacillus were poor (0.032 and 0.0006, respectively), and the trial was ended prematurely. "It was considered unethical to continue recruitment to a trial with no potential benefit," the authors note.
"The use of lactobacillus in post-antibiotic vulvovaginitis is an example of a treatment that has widespread use despite lack of a biologically plausible basis or evidence of effectiveness," the authors write. "Our results should prompt health professionals to inform women that lactobacillus is unlikely to prevent post-antibiotic vulvovaginitis and that they should consider using proved antifungal treatment if symptoms develop."
Back to the drawing board.
*Probiotics = living microorganisms
If you're a boy, you probably already know that frequent ejaculation leads to lower sperm concentration:
[S]perm concentrations fell as weekly ejaculatory frequency increased. Compared with one ejaculation, sperm concentration fell 29% with two ejaculations and by 41% with three ejaculations. In contrast, ejaculatory frequency seemed to have no effect on sperm motility or morphology.
But did you also know that, at least in Copenhagen, there's a lot more activity going on during the spring months than during the winter ones? Ah, the trivia one is able to pick up form medical articles!