Epidemiology
    • Epidemiology is defined as follows: It is 
      the study of the frequency, distribution and 
      determinants of health related phenomena 
      in human populations.
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                      NUTRITION
    • Science of food, nutrients and other substances 
      therein, 
    •    the processes by which the organism ingests 
      food,  digests,  absorbs  nutrients,  transports, 
      utilizes   and  excretes  waste  or  undigested 
      substances
       –And  their  action,  interaction  and  balance  in 
         relation to health and disease 
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       Nutritional epidemiology
      The study of the nutritional 
     determinants of disease in 
          .human populations
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               Nutrition in Epidemiology
   • In the field of Epidemiology , nutrition can be 
     defined as:
      –The way in which the human body reacts with 
        diet
      –The extent to which the diet influences levels of 
        health
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         NUTRITIONAL EPIDEMIOLOGY
   •Many  questions  about  diet  and  disease  remain 
    Many  questions  about  diet  and  disease  remain 
    unresolved.
    unresolved.
   •Nutritional   epidemiology  will    enable  us  to 
    Nutritional   epidemiology  will    enable  us  to 
    understand the relationship between diet and health 
    understand the relationship between diet and health 
    as well as diet and disease
    as well as diet and disease
   •Our understanding of biologic mechanisms remains 
    Our understanding of biologic mechanisms remains 
    incomplete  to  predict  confidently  the  ultimate 
    incomplete  to  predict  confidently  the  ultimate 
    consequences of eating a particular food or nutrient.
    consequences of eating a particular food or nutrient.
    6                      CHS 269_Lecture (1)