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“Fluoride Gels” are acidic, highly concentrated fluoride products that dentists topically apply to a patient’s teeth about two times a year. Of all the fluoride products currently utilized in dentistry, these fluoride gels are – without question – the most hazardous. While fluoride gels are designed to be applied “topically” (i.e., directly to teeth), very […]
Fluoride’s Effect on Male Reproductive System: Animal Studies
Over 60 studies on animals (including rats, mice, roosters, and rabbits) have found that fluoride adversely impacts the male reproductive system. These studies have repeatedly found the following effects: (1) decreases in testosterone levels; (2) reduced sperm motility; (3) altered sperm morphology; (4) reduced sperm quantity; (5) increased oxidative stress; (6) and reduced capacity to breed.
Male infertility is responsible for about 50% of the fertility problems that couples face. Infertility in males is often the result of reduced sperm court, abnormal sperm quality (e.g., reduced motility and altered morphology), or altered levels of sex hormones (e.g., reduced testosterone). A review of over 100 studies of sperm density from 1938 to […]
Fluoride’s Effect on Male Reproductive System – Human Studies
Consistent with in vitro and animal research, studies of human populations have reported associations between fluoride exposure and damage to the male reproductive system. Most notably, a scientist at the Food & Drug Administration reported in 1994 that populations in the United States with more than 3 ppm fluoride in their water had lower “total fertility rates” than populations with lower fluoride levels.
Fluoride’s Effect on the Male Reproductive System — In Vitro Studies
Carefully controlled in vitro studies have found that direct exposure of fluoride to the testes or semen inhibits testosterone production and damages sperm. While researchers have known since the 1930s that mega concentrations of fluoride can completely (but reversibly) immobilize sperm, it was not until the 1970s and 1980s that researchers found that relatively modest concentrations of fluoride could cause damage prior to complete immobilization.
Fluoride’s Effect on Male Reproductive System — The “Sprando/Collins” Anomaly
In contrast to the findings of over 60 animal studies from other research teams, a series of studies by FDA researchers Sprando & Collins reported virtually no evidence of reproductive toxicity among animals treated with very high levels of fluoride exposure. The reasons for this discrepancy remains unclear. Excerpts from Sprando/Collins’ Studies: “This study provides quantitative information […]
Infertility on the rise in Canada: study
Infertility is on the rise in Canada, according to the first study in nearly two decades to measure the proportion of Canadian couples who are having difficulty conceiving. The researchers didn’t set out to discover why the numbers are increasing. But possible explanations range from the growing number of women who are pushing back pregnancy […]
BBC: Male infertility ‘is increasing’
Infertility may be becoming more of a man’s than a woman’s problem, new figures suggest. A number of factors including declining sperm quality due to environmental toxins may be involved.