What type of research studies populations and is often used to search for correlations or associations between dietary habits and disease incidence?

"Epidemiological study" type of research studies populations and is often used to search for correlations or associations between dietary habits and disease incidence.

Explanation:

"Epidemiology" is the study about human's diseases or other animal populations to detect and analyse how, when and where they occur. The study try to determine which factors are associated with disease termed as risk factors and which factors can protect people or animals from disease termed as protective factors.

Therefore "Epidemiological study" type of research studies populations and is often used to search for correlations or associations between dietary habits and disease incidence.

Epidemiological Study

Explanation:

Epidemiological Study is the type of research which studies populations and is often used to search for correlations or associations between dietary habits and disease incidence.