Is low testosterone safe in men?

Testosterone levels can vary with age, sleep, illness, stress, body weight, medicines, and problems affecting the testicles or pituitary gland. Possible effects include reduced sexual desire, erection difficulty, low energy, reduced muscle strength, low mood, or fertility problems. These symptoms have many possible causes, so a single result does not establish the diagnosis.

Arrange an appointment if symptoms persist or affect your relationships, work, or wellbeing. A clinician may repeat early-morning blood testing, review medicines and sleep, examine you, and look for a reversible cause. Do not start testosterone from an unregulated source. Treatment decisions should include fertility plans, prostate health, blood count, sleep apnoea risk, and follow-up monitoring.

Seek prompt care for severe headache with vision changes, sudden testicular pain or swelling, chest pain, severe breathlessness, or thoughts of self-harm. Book a routine review for reduced libido, persistent fatigue, erection changes, or fertility concerns rather than assuming testosterone is the cause.

Ask whether your symptoms and test results fit testosterone deficiency, what causes should be checked, how treatment could affect fertility, and which monitoring appointments are needed.