When the homocysteine level is higher than the normal range, moderate oral folic acid can be taken. Generally, the normal fasting plasma total homocysteine level is 5-15 μmol/L, and the ideal value is <10 μmol/L (the reference range of the normal value may be different in different hospitals). Homocysteine is one of the risk factors for cardiovascular and cerebrovascular diseases. When the value is high, small doses of oral folic acid can be taken, which can promote the metabolism of homocysteine and reduce its level. In addition, you can also take vitamin B, which can improve the effect of lowering the homocysteine value. In addition, it is important to consume foods rich in folic acid, which is commonly found in fruits and vegetables, such as oranges, strawberries, spinach and greens. Once the homocysteine value exceeds the normal standard, you should go to the regular hospital in time for treatment and medication under the doctor's guidance.