Diseases associated with unhealthy dietary behavior rank among the leading causes of illness and death in the United States. Major diseases in which diet plays a role include coronary heart disease, some types of cancer, stroke, hypertension, obesity, osteoporosis, and non-insulin-dependent diabetes mellitus. All of these diseases are major causes of morbidity and mortality in this country. Although diet is associated with multiple health outcomes, the ability of counseling to change dietary patterns and improve health is unclear. In this report, counseling is defined as a cooperative mode of interaction between the patient and primary care physician or related healthcare staff to assist patients in adopting behaviors associated with improved health outcomes.
To address the question of whether counseling can improve dietary patterns, we performed an extensive systematic evidence review on behalf of the U.S. Preventive Services Task Force (USPSTF).This larger report comprehensively updated the chapter on dietary counseling from the second edition of the Guide to Clinical Preventive Services, and it is available from the Agency for Healthcare Research and Quality (AHRQ).