When to worry about loss of libido with low testosterone

Testosterone supports sexual desire, but desire is also shaped by sleep, stress, mood, medicines, physical health and relationship circumstances. A low libido therefore needs context, even when a blood result has shown low testosterone.

Book a routine review if reduced desire persists, interferes with intimacy or wellbeing, or appears with fewer morning erections, reduced energy, low mood, reduced muscle strength or fertility concerns. The clinician can check whether the result and symptoms fit together and consider other explanations.

Note when the change began and whether it varies with sleep, stress, illness or medicines. Record related sexual symptoms without embarrassment; this may help distinguish desire from erection, pain or arousal problems.

Do not start testosterone or change prescribed treatment without supervision. Ask how testing should be interpreted, whether repeat assessment is needed, and how fertility plans affect treatment choices.

Seek prompt advice for sudden genital pain or swelling, severe headache or vision change, or a major mood change. Seek urgent help if depression includes thoughts of self-harm. For a gradual, persistent or distressing reduction in desire, arrange a routine appointment.

Ask whether your symptoms could reflect low testosterone or another condition, whether medicines or sleep are contributing, what testing is appropriate, and how treatment could affect fertility and sexual function.