§ Sir Richard Glynasked the Parliamentary Secretary for Science whether the Medical Research Council is studying the effect on the human body of possible intakes of D.D.T. and dieldrin.
§ Mr. Denzil FreethThe Medical Research Council has been carrying out studies of D.D.T. and dieldrin in animals with a view to understanding their possible effects on man. Results have shown that, at levels much greater than those normally found in man, these substances have no effect on the metabolism of the animal's fat, which is where they are stored. The need for further research will be reviewed in the light of the results of a survey, now being carried out in collaboration by several organisations at the request of the Government's Advisory Committee on Poisonous Substances used in Agriculture and Food Storage, into the levels of D.D.T. and dieldrin in human fat and milk.