What are the differences between estrogen and its male counterpart, and how do they affect the body differently?

Estrogen is a hormone primarily found in females, while its male counterpart is testosterone. Estrogen is responsible for regulating the menstrual cycle, promoting breast development, and maintaining bone health in women. Testosterone, on the other hand, is responsible for male characteristics such as facial hair growth, muscle development, and sperm production. These hormones affect the body differently due to their distinct roles in reproductive and physiological functions.