Changes to the Abortion Act 1967 were introduced in Parliament through the Human Fertilisation and Embryology Act 1990. The time limits were lowered from 28 to 24 weeks for most cases on the grounds that medical technology had advanced sufficiently to justify the change. Restrictions were removed for late abortions in cases of risk to life, foetal abnormality, or grave physical and mental injury to the woman. Some Members of Parliament claimed not to have been aware of the vast change that the decoupling of the Infant Life Preservation Act 1929 would have on the Abortion Act 1967, particularly in relation to the unborn disabled child.