The three different types of epidemiological nutrition studies: cross-sectional, case-control, and prospective cohort studies. The three basic types of nutrition research are randomized, animal and laboratory studies, and cohort studies.
Cross-sectional studies are used primarily to determine the prevalence of a problem, while cohort studies involve the study of a population that is both exposed and unexposed to the cause of the disease. Case control studies are used to study 2 groups of cases (diseased) and controls (non-diseased) and to identify risk factors between them. Randomized trials, researchers actually intervene to see how a particular behavior change or treatment, for example, will affect a health outcome. Animal and laboratory studies are studies carried out in laboratories on cells, tissues or animals. Laboratories provide tightly controlled conditions that have a broad impact on human health.
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