Baby born one month jaundice 12mg/dL more than may be normal. Jaundice in newborns is a common condition, and jaundice values of up to 12.9mg/dL in full-term infants and up to 15mg/dL in preterm infants are generally normal. Therefore, a baby with jaundice of 12mg/dL in the first month of life may be normal and usually does not require special intervention. If your baby’s jaundice is persistently elevated, you need to go to the hospital as soon as possible to find out the cause of the problem, and the doctor will then give you the appropriate treatment. In particular, if the baby has poor mental status, along with screaming and lethargy, it is possible that pathologic jaundice may be present. This condition is usually caused by biliary atresia, infection, etc. It is recommended that in addition to giving the baby the appropriate treatment, we should also give the baby more water and urinate more often, which will help the bilirubin to be discharged. In addition, parents are advised to take their babies outdoors for sun exposure before 8 am and after 5 pm to accelerate the elimination of jaundice and the absorption of calcium. If your baby has any discomfort, we suggest that you consult a doctor as soon as possible to avoid delay in treatment.