Spermatogenesis, male sex characteristics, sex differentiation, and fertility are all regulated by testosterone, the primary hormone in males. Many organ systems are affected by low testosterone in men. Reduced testosterone has physiological effects on men's health, including mood, cognitive function, muscle mass and strength, and bone density. A differential diagnosis is made using the patient's medical history of the patient, physical examination, clinical symptoms, and testosterone levels. An iron deficit is brought on by iron loss through blood loss or other disorders, and anemia is the result. electrolytes are present in the extracellular and intracellular fluids. In the extracellular fluid, sodium and chloride are the main cations and anions. In the intracellular fluid, potassium is the primary cation. Preserving homeostasis requires electrolytes.