The Glyphoshate based herbicide Roundup, (a Monsanto product), has been linked to a global reduction of sperm count in a little known Brazilian study.
The Brazilan study by researchers at the University of Santa Catarina, titled Roundup Disrupted Male Reproductive Functions By Triggering Calcium-Mediated Cell Death In Rat Testis And Sertoli Cells, showed that “acute Roundup exposure at low doses (36ppm, 0.036g/L) for 30min induces oxidative stress and activates multiple stress-response pathways leading to Sertoli cell death in prepubertal rat testis
The introduction to the study concluded: “Glyphosate has been described as an endocrine disruptor affecting the male reproductive system; however, the molecular basis of its toxicity remains to be clarified. We could propose that Roundup toxicity, implicating in Ca2+ overload, cell signaling misregulation, stress response of the endoplasmic reticulum and/or depleted antioxidant defenses could contribute to Sertoli cell disruption of spermatogenesis that could impact male fertility.”
Professor Niels Skakkebaek of the University of Copenhagen presented data indicating sperm counts had fallen by about a half over the past 50 years. Sperm counts in the 1940s were typically well above 100m sperm cells per millilitre, but Professor Skakkebaek found they have dropped to an average of about 60m per ml. 2011 marked the 20th anniversary of the WHO conference where Professor Niels Skakkebaek first alerted the world to the fact that Western men are suffering an infertility crisis. Sperm counts in the 1940s were typically well above 100m sperm cells per millilitre, but Professor Skakkebaek found they have dropped to an average of about 60m per ml.
The studies specify that there is a link between environmental factors that can influence sperm count. Given the widespread global application of Roundup it is reasonable to assume that it has a detrimental effect on male infertility.