Stories stating that soy products lower sperm count
do not tell the whole story, according to a statement released by the Soyfoods Association of North America is a non-profit trade association that has been promoting consumption of soyfoods in the diet since 1978.
They say the small scale, preliminary study that Dr. Jorge Chavarro published in Human Reproduction is based on recollected intake of soyfoods and not on specific diets containing soyfoods.
“This study is confounded by many issues, thus I feel the results should be viewed with a great deal of caution,” said Dr. Tammy Hedlund, a researcher in prostate cancer prevention from the University of Colorado Health Sciences Center, Department of Pathology. Dr. Chavarro found that “soyfood and soy isoflavone intakes were unrelated to total sperm count, ejaculate volume, sperm motility, or sperm morphology” which are the important measures of sperm quality and male fertility.