Loss of libido (sex drive) is a common problem that affects many men and women at some point in their life.
It's often linked to relationship issues, stress or tiredness, but can be a sign of an underlying medical problem, such as reduced hormone levels.
Everyone's sex drive is different – there's no such thing as a "normal" libido. But if you find your lack of desire for sex distressing or it's affecting your relationship, it's a good idea to get help.
This page explains where you can get help and some common causes of a low libido.