A top official of the American Cancer Society has resigned

A top official of the American Cancer Society has resigned

A top official of the American Cancer Society has resigned in part because of concern over some of the organization’s fund-raising partnerships.

The official, Dr. Otis W. Brawley, an executive vice president and chief medical officer, resigned his post late last week after 11 years at the society. His departure was largely attributed to his dismay over some commercial partnerships, including with Herbalife International, the controversial supplements company, people close to him said.

While he would not comment publicly, others said that he had become uncomfortable with the society’s growing reliance on donations from businesses with questionable health credentials that he and others suspect are seeking to burnish their images.

Dr. J. Leonard Lichtenfeld, deputy chief medical officer at the society, said Dr. Brawley’s resignation had hit his colleagues hard.