Some testosterone molecular mechanisms on bone metabolism have been currently established by many experimental data. Bone fracture due to osteoporosis is an important issue in decreasing the quality of life for elderly men in the current aging society. The rate was higher among women (19.6%) than men (4.4%) . Preventive Services Task Force’s osteoporosis screening recommendations are under review. If you have osteoporosis, talk with others who have it and reach out to family and friends for support. Talk to your health care provider about what’s best for you before starting any exercise program. Significant BMD increases were detected the earliest (12 months) and over dispersed body sites (lumbar spine, total hip, trochanter, and intertrochanteric) only for the highest testosterone doses. Vertebrae are comprised of approximately 75% trabecular bone, whereas the femoral head is only 50% trabecular bone . This difference between changes in the femoral neck and spine may be explained by the different contribution of cortical and trabecular bone in these two regions. These participants were treated with intramuscular testosterone injections for 5 to 8 years, the longest study to date. Regarding the lumbar spine BMD, only 5 of the 14 showed significant increases, with the remaining showing nonsignificant (6 of 14) or no (3 of 14) differences after therapy. AR is present in chondrocytes and osteoblasts, although its expression level widely varies by age and bone sites. Therefore, this article reviewed the relationship between testosterone and BMD in men and mentioned the benefits of TRT on BMD among hypogonadal men. As aforementioned, the association between testosterone deficiency and BMD loss has been currently clarified. Epidemiological information on male osteoporosis arising from secondary causes, and male hypogonadism, specifically, is lacking, and therefore, the prevalence of male osteoporosis attributed to hypogonadism is unclear. A similar estimated prevalence of female osteoporosis reveals a significantly greater incidence for any age, including those under 70 years old (Table 1). The WHO has compiled data on the prevalence of male and female osteoporosis from different epidemiological studies around the world . Thus, regardless of whether one uses a female or male reference population, the traditional diagnostic category of BMD T-score SD ≤ −2.5 and between ≤1.0 and ≥2.5 is universally used to define osteoporosis and osteopenia in males aged ≥ 50, respectively. Furthermore, the importance of BMD measurements has decreased as emphasis has shifted away from BMD measurements for diagnosis, and more towards the clinically significant fracture risk assessment, of which BMD measurements are only one of many factors that are now considered. Taking steroid medicines as pills in a dose of 5 mg or more for three or more months can increase the chance of bone loss and developing osteoporosis. If you need to take a medicine that causes bone loss, work with your healthcare provider to determine the lowest possible dose you can take to control your symptoms. If you have any of the following diseases or conditions, talk to your doctor or health care provider about what you can do to keep your bones healthy. Some research shows that people who have high intakes of calcium from food and supplements have a lower risk of cancers of the colon and rectum, but other studies do not. In addition, it is not clear whether calcium supplements help prevent fractures. Although bone loss is more common in women, it can affect men too. Almost all calcium in the body is stored in bones and teeth, giving them structure and hardness. However, it is essential to consider other lifestyle factors and consult with a healthcare professional to determine the most suitable approach for maintaining bone health. (1) Female reference populations for bone mineral densities remain an acceptable standard for males aged ≥50, yet there is an increasing worldwide use of male reference populations. Other pharmacological therapies specifically for male osteoporosis secondary to hypogonadism have yet to be studied. Osteoporosis can develop if your bone mass decreases or the structure of your bones changes. Osteoporosis can develop if your bone mass decreases or the structure of your bones changes, making the bones weaker and more likely to break. So if you are getting it, you should consider having routine bone mineral density screenings. For simplicity, it has been advocated by the WHO and others to use the traditional standard female-only reference population. Ideally, in order to capture and acknowledge the differences in the peak BMD reference that occurs between males and females, the male peak BMD reference should be higher than that of females. This updated reference standard has been accepted by a number of international organizations and authorities 3–6, yet many recognize that this Caucasian and female-only reference population is less than ideal for different ethnicities and male gender. After a fracture, 60% of surviving men have a higher chance of suffering a second fracture. It is estimated that 2 million men in the United States currently have osteoporosis.
