Osteoporosis is essentially the breakdown of our bone, our bone matrix, as a result of old age. And it also stimulates the closure of our epiphysical plate found in our long bone. So it's not only involved in actually elongating our bone, but it is also involved in ending the process of elongation in our long bones. Now, as time progresses and as our lady cells continually release our testosterone into our blood, that increases the level of testosterone in our blood. And as the blood testosterone level increases, the testosterone can actually go and inhibit the hypothalamus from releasing the gonadotropin releasing hormone and it can also inhibit the anterior pituitary gland from releasing our luteinizing hormone as well as the follicle stimulating hormone. And this type of pathway is known as negative feedback inhibition or negative feedback mechanism.