Low iron and sex drive: what should you know?

Iron helps your body support energy production and oxygen transport. When iron stores are low, you may feel exhausted, weak, short of breath with activity, or less able to focus. Those changes can reduce sexual interest and make intimacy feel harder to start. Heavy menstrual bleeding, pregnancy, restricted diets, or poor absorption can contribute to low iron. Low desire can also be related to stress, low mood, relationship concerns, medicines, vaginal discomfort, or hormonal changes around menopause. A symptom alone cannot identify the cause.

Arrange a medical review if low energy and reduced desire persist or interfere with your relationship. A clinician may ask about bleeding, diet, pregnancy, digestion, medicines, sleep, and mood, and may order blood tests to check iron status and look for anaemia. Do not start high-dose iron without advice, because the right treatment depends on the cause and excessive iron can be harmful. Keep a note of when the change began, menstrual bleeding pattern, tiredness, breathlessness, and any pain or dryness during sex. Addressing the cause may help, while libido can take time to change.

Seek prompt medical help for chest pain, fainting, severe breathlessness, marked weakness, or bleeding that is unusually heavy. Arrange a routine appointment for ongoing tiredness, repeated heavy periods, unexplained weight change, bowel symptoms, or persistent low desire. If sex is painful, bleeding occurs after sex, or vaginal dryness is affecting intimacy, mention it specifically because it may need separate treatment.

Could low iron or anaemia explain my fatigue and reduced desire? What might be causing low iron? Which tests are appropriate? Could my medicines, menstrual bleeding, mood, or vaginal symptoms be contributing? When should my symptoms be reviewed?