Let’s first look at the effect of fluoride on male sex hormones. Male sex hormones are called androgens and testosterone is the main androgen that enables our reproductive function.8 Recent studies have shown that when it comes to testosterone production, men should be quite careful of what they choose to put on their toothbrushes. Researchers from China conducted a study on males between 18 and 50 years of age who lived in three separate villages. While one group was exposed to high levels of fluoride, the other was not. The study results clearly indicated that prolonged exposure to fluoride could greatly reduce testosterone levels in otherwise healthy men.9
Another collaborative study conducted by researchers from Waterloo, Canada, China and Chengdu goes on to show that fluoride causes decreased sperm count, disturbances in the levels of sex hormones, reduced fertility and even alterations in the male reproductive system. The study goes on to say that increased exposure to fluoride can cause deficiency of zinc in the testes leading to testosterone suppression and shrinking of your family jewels.10
