MSFinals-3576
A 32-year-old woman of Chinese Han ethnicity contacts her GP to discuss her planned pregnancy, estimated to be at 6 weeks gestation. She has a BMI of 31 kg/m² and smokes 10 cigarettes per day. Her mild asthma is well-controlled with inhaled beclomethasone. The GP recommends taking folic acid 5mg daily for the first 12 weeks of pregnancy.
What would warrant prescribing high-dose folic acid for this patient?