31 May 2013 | EVOLUTION
Effect is more pronounced in men with high testosterone
Excerpt: “I didn’t know that this pheromone could interact with testosterone at all,” Rantala says.
Excerpt: “We don’t know whether we would be able to observe a similar effect with [the] use of more realistic concentrations.”
My comment: Based on what I have detailed in a series of published works that include our award-winning review: Human pheromones: integrating neuroendocrinology and ethology and my award-winning journal article/book chapter: The Mind’s Eyes: Human pheromones, neuroscience, and male sexual preferences, we used a species-specific mixture of 1 mg/ml androsterone and 4 mg/ml androstenol that altered women’s observed flirtatious behaviors and their self-reported level of attraction. See: Human pheromones and nutrient chemicals: epigenetic effects on ecological, social, and neurogenic niches that affect behavior.
The authors of the article excerpted above state: “Our study was the first to integrate the two distinct branches of research: human pheromone research and research on decision making behavior.”
1) There are no indications that they used a species-specific human pheromone. 2) Pheromones are found in mixtures. 3) Exposure to 30 mg of a crystalline compound does not represent “real life” exposure.
This study is not the first to claim to be “…the first to integrate…” anything. It may be the first to use yeast as a control, however. The potential confound that should be addressed is that the alpha-mating pheromone of brewer’s yeast induces a luteinizing hormone (LH) response from cultured rat pituitary cells. This suggests that the yeast they used could also alter testosterone levels via the epigenetic effects of pheromones that clearly extend across species from microbes to man.