Therapeutic Benefits of testosterone replacement include heart protection against coronary artery disease, lowering cholesterol, addressing high blood pressure, stress resiliency, improved insulin sensitivity, improved cognitive function, improved muscle mass, improved stamina, improvements in sexual function, and improvements with congestive heart failure.
Causes of deficiency include aging, stress, toxic exposures, endocrine disruptors, nutrient deficiencies, low gonadotropin levels, elevated prolactin level, chronic kidney failure, hypothyroid, several medications, diabetes, low cholesterol diet, statin therapy, vegetarian/vegan diet, infections, trauma, alcohol abuse, and elevated scrotal temperature exposure.