This website is maintained voluntarily by parents of and caregivers to children with persistent hyperinsulinism. We wish to share what we know (or think we know) with each other and particularly with people who have just become parents of hyperinsulaemic children. Although we try to sort out the good from the bad and the useful from the useless, we have only our parental experience to rely on, are not medical practitioners and make no representation, express or implied, that the information presented here is authoritative or accurate. As such, parents must judge for themselves, in consultation with their physicians, how to make use of the information presented here, and make no medical reliance on this information.