Can folate deficiency cause anaemia?

Folate, also called vitamin B9, supports cell division and red blood cell formation. When levels are low, the bone marrow may produce unusually large, immature red cells that do not carry oxygen efficiently. This can cause tiredness, weakness, breathlessness on exertion, headaches, a sore tongue or pale skin. Poor intake, reduced absorption, increased need during pregnancy, alcohol use and some medicines can contribute. Vitamin B12 deficiency can look similar and needs separate assessment.

Arrange a medical assessment rather than starting folic acid blindly. A clinician may review your diet, medicines and health history and order blood tests, including red cell measurements and vitamin levels. Treatment commonly involves prescribed folic acid and addressing the cause, while foods such as leafy greens, beans, peas and fortified grains can support intake. Vitamin B12 status should be checked before or alongside folate treatment because folic acid can improve the blood count while nerve problems from untreated B12 deficiency continue.

Seek urgent care for severe breathlessness, chest pain, fainting, confusion or a racing heartbeat with weakness. Book an appointment if tiredness, mouth soreness or reduced exercise tolerance persists. Prompt advice is especially appropriate during pregnancy, with heavy alcohol use, bowel disease, weight loss or medicines that may affect folate.

Ask which blood tests are needed, whether B12 deficiency has been excluded, what may have caused the low folate, and how long treatment should continue. Discuss diet, supplements, pregnancy needs and any medicine changes safely.