1 Laboratory animal practice-Some veterinarians work in a university or industrial laboratory and are responsible for the care and treatment of laboratory animals of any species (often involving bovines, porcine species, felines, canines, rodents, and even exotic animals).
High estrogen levels in men contribute to prostate cancer and heart disease as well as gynecomastia (enlarged breasts).As the testosterone is transformed into estrogen the low levels of testosterone can cause many unpleasant symptoms including loss of muscle mass, fatigue, low libido, erectile dysfunction.s teenagers, men have high levels of testosterone and low levels of estrogen. As they age, testosterone levels in men decrease while their estrogen levels increase.
Causes of High Estrogen Levels. There are many factors that can cause high estrogen levels in women, with pregnancy and the lead up to menopause being common hormonal triggers. Another cause is a woman's menstrual cycle. Levels of the estrogen, estradiol, have been recorded at an average of 400pg/ml for most women during ovulation.