Let’s face it. The results of nutrition research is often frustrating to sort out and this article tells us why. What to do? I look at the big picture by studying epidemiological evidence such as diet patterns. An example might be studying the countries of the Mediterranean region and those of the Blue Zones which investigates the lifestyles of long-living healthy populations.
Epidemiology is the study of patterns of disease in human populations. Because epidemiological studies look directly at humans rather than infer results from animal studies, they provide the best tool for measuring environmental risks to humans.
Epidemiological studies provide evidence, not proof. A limitation is the uncertainty which is inherent in these types of studies.