Low testosterone can affect sex drive, erections, energy, mood, muscle, bones, and fertility. Men with diabetes, especially older men and men with higher body weight, may be more likely to have low testosterone.
Quick summary
The diagnosis should not be made from symptoms alone. Many symptoms overlap with poor sleep, depression, stress, thyroid disease, medication effects, obesity, heart disease, and diabetes itself.
Key takeaways
- Low testosterone needs both symptoms and appropriate blood testing.
- A single symptom does not prove low testosterone.
- Testosterone treatment is not safe or appropriate for everyone.
- Sleep apnea, prostate or breast cancer history, blood clots, fertility goals, and heart risk should be reviewed.
What to ask before testing
- Which symptoms are most concerning?
- Should testosterone be checked in the morning and repeated on a separate day if low?
- Could medicines, sleep apnea, depression, thyroid disease, or weight changes explain symptoms?
- Should fertility goals be discussed before any treatment?
- What risks would testosterone therapy carry for me?
Treatment caution
Testosterone replacement may help selected people with confirmed hypogonadism, but it is not a general energy booster or diabetes treatment. Treatment decisions should include benefits, side effects, monitoring, fertility, prostate symptoms, blood counts, and cardiovascular history.
Do not use non-prescribed testosterone or supplements marketed as testosterone boosters. They can be unsafe and may hide the real cause of symptoms.
Practical takeaway
Low testosterone is worth discussing, but the answer should come from symptoms, repeat lab testing, and a full health review.
Safety note
This article is not a substitute for medical care. Seek urgent care for chest pain, severe shortness of breath, stroke symptoms, severe depression, suicidal thoughts, or symptoms that feel unsafe.
What to ask your care team
- Do my symptoms fit low testosterone or another condition?
- How should testing be done and repeated?
- What are the benefits and risks of treatment for me?
Related reading
Source summary
- Diabetes and Men, Centers for Disease Control and Prevention. Patient guidance. Accessed June 5, 2026. Source
- Diabetes, Sexual, and Bladder Problems, National Institute of Diabetes and Digestive and Kidney Diseases. Patient guidance. Accessed June 5, 2026. Source
- Could You Have Low Testosterone?, MedlinePlus, National Library of Medicine. Patient guidance. Accessed June 5, 2026. Source
- Testosterone, MedlinePlus, National Library of Medicine. Drug information. Accessed June 5, 2026. Source