American Urological Association (AUA) - Erectile Dysfunction Guidelines
Comprehensive guidelines on erectile dysfunction (ED), causes, diagnoses, and available treatments, including medications and psychosexual therapy.
Reference: American Urological Association. (2018). Erectile Dysfunction: AUA Guidelines.
International Society for Sexual Medicine (ISSM) - Erectile Dysfunction and Libido

ISSM provides guidelines on erectile dysfunction, its treatments, and the interaction between libido and physical and psychological factors.
Reference: International Society for Sexual Medicine (ISSM). (2020). Erectile Dysfunction: A Clinical Overview.
BJU International - Testosterone and Male Sexual Health

Studies on the relationship between testosterone levels and libido, erectile dysfunction, and the impact of hormone replacement therapy.
Reference: Zarroug, A. et al. (2020). Testosterone and Male Sexual Function. BJU International, 126(6), 743-750.
The Lancet - The Impact of Age on Erectile Function

A review of how aging affects erectile function and libido, and treatment options for older men.
Reference: Hatzimouratidis, K., & Eardley, I. (2019). Erectile Dysfunction: A Review of Clinical Guidelines. The Lancet, 393(10176), 27-37.
Journal of Sexual Medicine - Erectile Dysfunction and Psychological Factors

This article examines the psychological factors contributing to erectile dysfunction, such as stress, anxiety, and depression, as well as therapeutic strategies.
Reference: Rosen, R. C., & Shabsigh, R. (2021). The Role of Psychological Factors in Erectile Dysfunction. Journal of Sexual Medicine, 18(5), 1020-1031.
National Institutes of Health (NIH) - The Role of Endothelial Dysfunction in Erectile Dysfunction

A study on endothelial dysfunction as an important cause of erectile dysfunction, focusing on blood circulation and its relationship to libido.
Reference: Lue, T. F. (2021). Endothelial Dysfunction in Erectile Dysfunction. NIH, Journal of Andrology, 42(3), 330-338.
American Heart Association (AHA) - Erectile Dysfunction and Cardiovascular Disease

The relationship between cardiovascular health and erectile function, with a focus on the importance of treating heart disease to improve libido and erectile function.
Reference: Montorsi, F., & Strine, A. (2021). Erectile Dysfunction as a Marker of Cardiovascular Disease. Circulation, 143(4), 556-565.
Andrology - Testosterone Deficiency and Erectile Dysfunction

Testosterone deficiency and its relationship with erectile function, with an emphasis on the impact of testosterone replacement therapy to improve libido and erection.
Reference: Khera, M., & Althof, S. E. (2021). Testosterone Deficiency and Erectile Dysfunction. Andrology, 9(6), 1553-1562.
Journal of Clinical Endocrinology & Metabolism - Testosterone and Sexual Function in Men

A review of the role of testosterone in male sexual function and the relationship between hypogonadism and reduced libido.
Reference: Snyder, P. J., & Bhasin, S. (2019). Testosterone and Sexual Function in Men. Journal of Clinical Endocrinology & Metabolism, 104(7), 2940-2947.
Psychology and Health - Psychological Factors in Male Sexual Dysfunction

An analysis of the psychological factors affecting libido and erectile function, including stress, anxiety, depression, and relational issues.
Reference: Meyer-Bahlburg, H. F. L., & Rosen, R. C. (2020). Psychological Factors in Male Sexual Dysfunction. Psychology and Health, 35(4), 422-436.
Journal of Urology - Pharmacological Treatments for Erectile Dysfunction

A review of pharmacological treatments for erectile dysfunction, including PDE5 inhibitors (such as sildenafil), hormones, and other options.
Reference: Burnett, A. L., & McVary, K. T. (2020). Pharmacological Management of Erectile Dysfunction. Journal of Urology, 204(3), 529-538.
Sexual Medicine Reviews - Integrating

Lifestyle Modifications in Erectile Dysfunction Treatment
The impact of lifestyle changes, such as diet and exercise, on erectile function and libido, based on clinical studies.
Reference: Fletcher, E. F., & Zeltser, R. (2021). Integrating Lifestyle Modifications in the Management of Erectile Dysfunction. Sexual Medicine Reviews, 9(1), 52-58.