It is a way of investigating a link between dietary behaviour and chronic diseases.
Epidemiological studies used:
* 24 hours recall
* Diet history
* Food frequency questionnaire
Types of chronic disease:
* type 2 diabetes
* Heart disease
* Stroke
Ways to investigate the link between dietary behaviour and chronic diseases
* Anthropometric
Using body weight, height, skin folds, waist and hip circumference
* Biochemical tests
Blood, urine, faeces, tissues are rested to deter subclinical deficiencies
* Clinical observation
Observation of pallor, hair, nails, skin, eyes, lips, mouth , muscles, joints
* Dietary assessment
Obtain report of food items consumed, portion sizes, frequency, calculation of nutritional intake
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