Medicine: Bold Exchange

On a winter's day in Philadelphia, six years ago, two sisters rang the bell of a young surgeon named Michael John Bennett. The older girl, 25, was enormously fat; she weighed well over 200 pounds. The younger, 14, was slender. Both had ovarian trouble. The thin girl menstruated excessively, the fat one hardly at all. No amount of glandular extracts had helped them. Dr. Bennett observed the girls carefully for a long period of time. Then he decided on a bold experiment, which he had tried on animals, but which had never before been successfully tried on human beings—an exchange of...

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