Health Professionals Follow-Up Study

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Health Professionals Follow-Up StudyInclusion Criteria: Male veterinarians, dentists, pharmacists, optometrists, osteopath physicians, and podiatrists aged 40 to 75 years at baseline.  ]]>
The Health Professionals Follow-Up Study (HPFS) began in 1986. At the beginning, Walter Willett (Principal Investigator), Meir Stampfer, and colleagues enlisted 51,529 men in health professions to participate in the study. This group is composed of 29,683 dentists, 4,185 pharmacists, 3,745 optometrists, 2,220 osteopath physicians, 1,600 podiatrists, and 10,098 veterinarians. Among the study participants are 531 African-Americans and 877 Asian-Americans. Every two years, members of the study receive questionnaires with questions about diseases and health-related topics like smoking, physical activity, and medications taken. The questionnaires that ask detailed dietary information are administered in four-year intervals. Biospecimens in the HPFS cohort include blood, DNA, tumor tissue, and toenails.]]>