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Related Concept Videos

Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

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Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra....
358
Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

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The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
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Menopause01:28

Menopause

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Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
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Infertility in Males01:23

Infertility in Males

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Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
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Drug Therapy01:28

Drug Therapy

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The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
Antianxiety Medications
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Bone Disorders01:29

Bone Disorders

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
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Related Experiment Video

Updated: Jun 13, 2025

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer
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Testosterone Therapy in Older Men: Present and Future Considerations.

Bu B Yeap1,2, Cammie Tran3, Catherine M Douglass4

  • 1Medical School, University of Western Australia, Perth, Australia. bu.yeap@uwa.edu.au.

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Summary

Testosterone therapy can benefit older men by improving sexual function, bone density, and preventing diabetes. Recent trials show cardiovascular safety, but further research is needed for broader applications.

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Area of Science:

  • Endocrinology
  • Geriatrics
  • Metabolic Health

Background:

  • Testosterone is a key male anabolic hormone crucial for development and body composition.
  • Hypothalamic, pituitary, or testicular dysfunction can impair testosterone production, requiring treatment.
  • Age, obesity, and comorbidities affect testosterone levels in men.

Purpose of the Study:

  • To review the evidence for testosterone treatment in older men.
  • To assess the safety and efficacy of testosterone therapy.
  • To identify future research directions for testosterone's role in aging and health.

Main Methods:

  • Review of recent randomized controlled trials (RCTs) on testosterone treatment.
  • Analysis of cardiovascular safety data from large trials.
  • Discussion of ongoing research questions and proposed RCTs.

Main Results:

  • Testosterone treatment improves sexual function, anemia, and bone mineral density in older men.
  • It shows potential in preventing or reversing type 2 diabetes mellitus in high-risk men.
  • Cardiovascular and prostate safety are reassuring based on recent trial data.

Conclusions:

  • Testosterone therapy offers benefits for specific conditions in older men.
  • Further large-scale RCTs are needed to explore its role in preventing frailty, fractures, and dementia.
  • Investigating testosterone's use alongside weight loss medications for obesity is a key future direction.