Androgenic Anabolic Steroids and Environmental Toxins

Effects of Androgenic Anabolic Steroids on Female Physiology

  • Breast Size Decrease:

    • Taking androgenic anabolic steroids decreases available estrogen, leading to breast shrinkage.

    • Breasts do not have androgen receptors, so they are affected negatively by reduced estrogen levels.

  • Facial Features:

    • Changes in facial structure may occur, including a more squared jawline.

    • Increased testosterone can lead to alopecia (hair loss) and thinning of hair on the head while promoting hair growth on the face and body.

    • Increased body hair (underarm, pubic, facial) attributed to testosterone.

  • Menstrual Cycle and Fertility:

    • Testosterone impacts hormonal feedback; it decreases production of GnRH (Gonadotropin-Releasing Hormone), LH (Luteinizing Hormone), and FSH (Follicle Stimulating Hormone).

    • Consequences include cessation of normal menstrual cycles and reduced fertility due to lowered sperm production in males.

    • Testicular volume may decrease by 30%, leading to infertility.

Thyroid Dysfunction and Glucose Intolerance

  • Metabolic Control:

    • Androgenic steroids can cause thyroid dysfunction, affecting basal metabolism and potentially leading to glucose intolerance.

    • Glucose intolerance is a precursor to insulin resistance, which is linked to type 2 diabetes.

Environmental Toxins Impacting Fertility

  • Sperm Count Decline:

    • Over the past 150 years, sperm counts have declined by approximately 50%.

    • There are concerns about the normal range for sperm counts being insufficient for successful pregnancy.

    • Factors leading to abnormalities include increased exposure to environmental toxins, pesticides, heavy metals, and plastics.

  • Hormonal Balance Disruption:

    • Toxins can disrupt hormone levels, affecting reproduction and developmental outcomes.

    • They can lead to developmental problems identified primarily through animal studies, with growing suspicion about human impacts.

Effects on Pregnancy and Developmental Health

  • Pregnancy Risks:

    • Exposure to certain toxins can lead to increased miscarriage risk and birth defects.

    • Examples include high fevers during pregnancy, certain viral infections, and chemicals like BPA and mercury found in some fish.

    • Historical context includes severe birth defects from environmental pollution incidents (e.g., Minamata disaster).

Lifestyle Factors Impacting Testosterone Levels

  • Drug Use:

    • Use of recreational drugs including alcohol, tobacco, and marijuana significantly decreases testosterone levels.

    • Increased THC levels in modern marijuana may exacerbate the effects on testosterone.

  • Sleep Deprivation:

    • Just one week of limited sleep can lead to a decrease in testosterone levels by up to 15%.

    • Chronic sleep deprivation negatively affects overall health, including reproductive health.

  • Dietary Factors:

    • High caffeine intake (over 1000mg/day) can affect fertility, while moderate consumption is usually acceptable.

    • Heavy alcohol consumption can impair production and increase metabolism of testosterone, affecting body composition and fertility outcomes.

Conclusion and Ongoing Research Needs

  • Environmental Chemistry:

    • Importance of monitoring and understanding the effects of microplastics and other contaminants on human health.

    • Public health recommendations should focus on reducing exposure to identified harmful substances across various domains (food, environment, lifestyle).

Summary of Risks Associated with Hormonal Disruption

  • Summary of Common Chemicals:

    • PCBs, BPA, Phthalates: Identified as endocrine disruptors linked to reproductive health issues.

    • Heavy Metals (Lead, Cadmium, Mercury): Known to have detrimental effects on development and health, particularly during pregnancy.