the start, Dr. Ariela Marshall, a hematologist at the Mayo Clinic in
Minnesota, proceeded with the conviction that if she worked harder,
longer and better, she would succeed. And she did: She graduated as high
school valedictorian, attended an elite university and was accepted
into a top medical school.
one achievement eluded her: having a baby. She had postponed getting
pregnant until she was solidly established in her career, but when she
finally decided to try to have children, at 34, she was surprised to
find that she could not, even with fertility drugs. Dr. Marshall
attributed it to having worked frequent night shifts, as well as to
stress and lack of sleep, which can affect reproductive cycles.