GI Epidemiology: nutritional epidemiology

Nutritional epidemiology

Nutritional Epidemiology

Biomarkers in nutritional epidemiology.

OBJECTIVE To illustrate biomarkers of diet that can be used to validate estimates of dietary intake in the study of gene-environment interactions in complex diseases. DESIGN Prospective cohort studies, studies of biomarkers where diet is carefully controlled. SETTING Free-living individuals, volunteers in metabolic suites. SUBJECTS Male and female human volunteers. RESULTS Recent studie...

Lower GI bleeding: epidemiology and diagnosis.

Lower gastrointestinal bleeding is one of the most common gastrointestinal indications for hospital admission, particularly in the elderly. Diverticulosis accounts for up to 50% of cases, followed by ischemic colitis and anorectal lesions. Though most patients stop bleeding spontaneously and have favorable outcomes, long-term recurrence is a substantial problem for patients with bleeding from d...

Challenges in Research in Nutritional Epidemiology

Diet is a complex aggregate of foods and behaviors. The food is constituted of a • wide variety of intended and unintended chemicals which may act singly on human metabolism, but more likely act in groups in a synergistic fashion. The study of nutrition and disease in aggregates of human beings—nutritional • epidemiology—is hampered by the dif fi culty in accurately characterizing this complex ...