§ Mr. Patrick Jenkinasked the Secretary of State for Social Services what study he has made of the theory that the reduction in the lead content of petrol has led to a decreased incidence of infant mortality and if he will make a statement.
§ Mr. EnnalsIt is known that the lead ingested from the emission of petrol is responsible for only a small proportion of the level of lead in blood. The possible relationship between lead in blood and the incidence of stillbirths and infant mortality is the subject of a joint study at the universities of Aston and Birmingham.