Newborns in England will now be routinely screened for a rare genetic disorder that can lead to serious health issues if not treated, according to official announcements. Hereditary tyrosinaemia type 1 (HT1) , which affects approximately one in seven babies annually in the UK, hinders the normal breakdown of protein from food , resulting in a toxic accumulation in the blood. NHS England confirmed that newborns will be screened for HT1 as part of the routine blood test offered five days post-