The human endocrine system is extraordinarily complex and has multiple organs and subsystems that are all involved with each other. All of them are perfectly integrated to maintain an optimal functioning that guarantees health and well-being. Any alteration in the functioning of one of these organs can have a secondary effect on the others with diverse repercussions, for example in the maintenance of body weight, learning, appetite, sleep and fertility.
Ovulation is a process especially sensitive to any endocrine alteration and that is why when we evaluate fertility in women, we investigate the functioning of some of these organs with specific hormonal studies depending on the clinical judgment of the specialist, for example the thyroid with TSH and prolactin.
For men, proper endocrine function is also important, but most studies indicate that sperm production is not as sensitive and is only altered when there are major hormonal disorders.