The causes of low testosterone are many and varied. Primarily, testosterone declines as men age. Another prevalent reason for the decline in testosterone in males of all ages is the exposure in our environment to petrochemicals. Xenoestrogens are byproducts of the petrochemicals in our environment. Petrochemicals enter our bodies through a variety of mechanisms, including the air we breathe, the water we drink, the foods we eat and the products with which our bodies come into contact, such as lotions and creams. Very simply, when petrochemicals enter the body, they are often converted to Xenoestrogens. Xenoestrogens then disrupt the synthesis and metabolism of the body’s hormones. As a result, males produce less and less natural testosterone. In fact, an article published in Baillieres Clinical Obstetrical Gynecology in 1997 entitled Declining Sperm Quality: A Review of Facts and Hypotheses, stated that there has been a 50% decrease in male sperm count since 1960. Environmental physicians attribute this decline to the growing exposure to petrochemical products and the resulting xenoestrogens. Other causes of low levels of testosterone in males include primary testicular dysfunction, also known as Klinefelter Syndrome, pituitary dysfunction and hypothalamic dysfunction.