Nutrition/Dietary assessmentcollecting

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1 Nutrition/Dietary assessmentcollecting and interpreting information Maria Hassapidou Professor of Nutrition and Dietetics ATEI Thessaloniki, Greece

2 NUTRITIONAL/DIETARY ASSESMENT

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4 ABCD OF NUTRITIONAL ASSESSMENT Anthropometric methods A B Biochemical laboratory methods D C Dietary Evaluation Clinical Methods

5 TOOLS FOR OBESITY DIAGNOSIS Survey in 22 European countries (229 dietitians),esdn Obesity

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9 24 Hours Dietary Recall qa trained interviewer asks the subject to recall all food & drink taken in the previous 24 hours. o It is quick, easy, & depends on short-term memory, but may not be truly representative of the person s usual intake

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11 Food Frequency Questionnaire Frequency Questionnaire In this method the subject is given a list of around 100 food items to indicate his or her intake (frequency & quantity) per day, per week & per month. inexpensive, more representative & easy to use.

12 Food Frequency Questionnaire Limitations: v long Questionnaire v Errors with estimating serving size. v Needs updating with new commercial food products to keep pace with changing dietary habits.

13 DIETARY HISTORY o It is an accurate method for assessing the nutritional status. The information should be collected by a trained interviewer. Details about usual intake, types, amount, frequency & timing needs to be obtained. Cross-checking to verify data is important.

14 FOOD DIARY Food intake (types & amounts) should be recorded by the subject at the time of consumption. The length of the collection period range between 1-7 days. Reliable but difficult to maintain.

15 Personal Digital Assistant (PDA ) A PDA is a handheld computer that can be used for dietary assessment.a PDA has a speciallydesigned dietary software program that can be used to register and/or self monitor dietary intake. Early PDAs provided users with a selection of about 180 food items; current PDAs offer a much higher number, between 400 and 4000 items.

16 Image-assisted dietary assessment methods Image-assisted dietary assessment methods refer to any method that uses images (i.e. photographs, videos)

17 Image-assisted dietary assessment methods The purpose of using images is to support traditional self-report methods (24-hour recalls or records) or as a stand-alone method to provide the primary record of dietary intake (Gemming et al., 2013; Lassen et al., 2010;Lazarte et al., 2012; Martin et al., 2014).

18 Mobile-based technologies Mobile-based technologies allow short-term dietary assessment in real-time. Participants are asked to take photographs, video or voice records of all the foods and drinks they consume on eating occasions. The identification of foods in the images and portion size estimation can be carried out by the respondents or dietitians. (Bousheyet al., 2015; Casperson et al., 2015).

19 Interactive computer and web-based technologies Several authors have developed interactive computer based dietary assessment methods from pen and paper traditional methods such as FFQ(Wong et al., 2008), 24-hour recall (Kirkpatricket al., 2014; Zoellner et al., 2005), food records(timon et al., 2015) or dietary history (Beasley et al., 2009)

20 Interactive computer and web-based technologies As an example, an interactive computer-based method called Novel Assessment of Nutrition and Ageing (NANA) was developed to assess the dietary intake of the elderly. NANA consists of a touch-screen computer-based food record, plus a fixed webcam for capturing any foods and drinks participants consume, in real time. The touchscreen button selections allow participants to navigate and select food items from 12 food groups. Timon et al., 2015

21 Scan- and sensor-based technologies Scan-based technologies allow participants to scan the barcodes of purchased food items or wear a small electronic device to record food intake automatically. It contains a miniature camera, a microphone, a memory card and several other sensors. (Sun et al., 2010). In all cases, the use of PDAs, mobile applications, interactive computer and web-based technologies has been shown to require an adequate level of literacy and technical skills on the part of the participants.

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23 Healbe-gobe2

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25 PERSONALISED NUTRITION The overall goal of personalised nutrition is to preserve or increase health using genetic, phenotypic, medical, nutritional, and other relevant information about individuals to deliver more specific healthy eating guidance and other nutritional products and services. Food 4me BiGo Protein PeRsOnalized nutrition for healthy living

26 Personalised Nutrition Using knowledge to optimise an individuals diet General healthy eating guidelines Individualised dietary analysis Phenotype (Biochemical profile) Genetic profile

27 PERSONALIZED NUTRITION The overall goal of personalised nutrition is to preserve or increase health using genetic, phenotypic, medical, nutritional, and other relevant information about individuals to deliver more specific NUTRITIONAL guidance and other nutritional products and services. Food4Me project Bigo(Big data against childhood Obesity) PeRsOnalized nutrition for healthy living (PROTEIN)

28 Personalized Nutrition by Prediction of Glycemic Responses Zeevi et al monitored glucose concentrations in 800 people continuously for 1 week. They then used the variability in glycaemic response to identical test meals to devise a machine-learning algorithm that integrated blood parameters, dietary habits, anthropometrics, physical activity, and gut microbiota to predict an individual's postprandial glycaemic response to real meals. The predictive algorithm was validated in an independent cohort (n=100). These investigators conducted a small randomised controlled dietary intervention study that suggested that personalised diets may successfully modify raised postprandial blood glucose. Personalized Nutrition by Prediction of Glycemic Responses,David Zeevi, et al,,cell, 163, 5, , 2015

29 Cell , DOI: ( /j.cell ) Copyright 2015 Elsevier In

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31 Thank you...