DHT treatment of hypogonadal males has been shown to decrease fat mass , have little to no effect on adiposity 15,16, and promote fat mass expansion . However, data involving the role of DHT in fat mass regulation in vivo are conflicting. DHT cannot be aromatized to estradiol as testosterone can and exerts its biological effects through AR; estradiol does so through estrogen receptors (ERs) and GPR30 10,11. Although the role of testosterone in maintaining muscle mass in males is well established , , , how testosterone exerts its anti-obesogenic effects is less clear. These data indicate that hypogonadism impairs glucose metabolism and increases obesogenic fat mass expansion through adipocyte hypertrophy and adipogenesis. Reducing xenoestrogen exposure through organic produce and plastic-free food storage addresses the environmental estrogen load. Alcohol elimination removes the most consistent dietary impairment of hepatic estrogen metabolism. Fiber at 35 to 40g daily promotes conjugated estrogen excretion. Cruciferous vegetables daily (broccoli, Brussels sprouts, cauliflower) shift estrogen metabolism toward the protective 2-OH pathway through their DIM content. Some women experience estrogen dominance symptoms on OCPs despite the estrogen suppression, through the progestin inadequacy mechanism. Elevated beta-glucuronidase on stool analysis alongside estrogen dominance symptoms identifies the gut recirculation mechanism. DUTCH complete showing elevated 4-OH estrogen with low 2-MeOE1 (2-methoxy estrone) identifies impaired methylation of the potentially genotoxic 4-OH metabolite. The progesterone-to-estradiol ratio is unfavorable regardless of the absolute estradiol value. A complete estrogen dominance evaluation requires mapping the metabolite pathways, not just measuring the circulating hormones. When any of these phases are impaired by nutritional cofactor deficiencies (B vitamins, magnesium, DIM, calcium D-glucarate), genetic COMT or CYP1B1 variants, or liver dysfunction, estrogen recirculates rather than being excreted. This includes not only muscle but everything in your body that is not fat, such as your organs, skin, bone, fluid levels, food weight, and stored glycogen.However, when we are talking about what is ‘optimally’ healthy, there is an important difference between BMI and body fat percentage.BMI does not account for body composition at all. It is possible that comparatively reduced estrogen signaling promotes visceral fat mass expansion without significantly impacting subcutaneous fat storage, which could contribute not only to visceral obesity in men but in post-menopausal women. By contrast, estradiol treatment specifically reduced visceral fat expansion (Figure 3E), with no significant effect on subcutaneous fat mass (Figure 3G). By performing hormone replacement therapy in castrated mice, we show that testosterone impedes visceral and subcutaneous fat mass expansion. Muscle mass is therefore far more metabolically costly to synthesise and maintain than body fat, which requires little additional output.And the benefits maintaining higher levels of muscle relative to your body fat percentage is not purely aesthetic. However, body fat percentages will look different on each individual so you may need to get leaner for a full six-pack to appear.You may also need to increase the size of the abdominal muscles through direct, targeted ab training. The risk of diseases such as type 2 diabetes, cardiovascular disease and high blood pressure all decrease significantly.One disadvantage of both BMI and body fat percentage is that it is incredibly hard to measure visceral fat. Splits the body into three compartments, measuring fat mass, total body water contentand dry weight fat-free mass only. Lower testosterone levels then make visceral fat cells more efficient at accumulating incoming fat from the bloodstream, which drives more aromatase activity, which drives testosterone lower. Unlike subcutaneous fat, it remains invisible from outside—someone can appear lean while carrying substantial visceral fat internally. The second theory—the portal theory—is the one most commonly cited by health professionals. Visceral fat appears to be a highly visible signal of broader systemic problems rather than the main culprit itself. Every person has what researchers call a critical fat storage threshold.
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