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Table of Contents
Year : 2022  |  Volume : 8  |  Issue : 1  |  Page : 33-38

Knowledge, attitudes and utilization of food labels among undergraduate medical students in a medical college in Chennai – A cross sectional survey

Department of Community Medicine, ESIC Medical College and PGIMSR, Chennai, Tamil Nadu, India

Date of Submission23-Jun-2021
Date of Acceptance05-Oct-2021
Date of Web Publication30-Jun-2022

Correspondence Address:
Vijayaprasad Gopichandran
Department of Community Medicine, ESIC Medical College and PGIMSR, KK Nagar, Chennai - 600 078, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijcfm.ijcfm_50_21

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Introduction: Food labeling is an important method of providing food-related information on the package of food products, to facilitate people's choice of safe and appropriate foods. Medical students are potential agents of change in food label utilization behavior in the community. The objectives of this study were to evaluate the knowledge, attitudes, and utilization of food labels among undergraduate medical students in a medical college in Chennai.
Material & Methods: We conducted a cross-sectional survey of 200 students studying in the 1st to 3rd year in a medical college through an online Google Forms survey, self-administered by the students after online informed consent was obtained. We gathered information on their knowledge, attitudes, and utilization of food labels.
Results: Of 400 students approached, 200 responded to the online survey. They had good knowledge about food labels. Female students had 3.4 (1.59 to 7.25) times better knowledge compared to men. The students had a positive attitude toward food labels, and a majority thought that the food labels are useful. Utilization of food labels to understand the nutritive content (55%), additives (57%), and manufacturer details (47%) was poor. Utilization of food labels was 2.7 times more (1.142–6.587) among those who did regular exercise, and it was 0.2 (0.09 to 0.9) times less among those who were on a strict diet.
Conclusion: Medical students had a sound knowledge and good attitude toward food labels, but their food label utilization patterns were still poor. There is a need to incorporate food labeling in the undergraduate medical curriculum and inculcate better food label utilization behavior.

Keywords: Attitudes, awareness, food labeling, medical students, utilization

How to cite this article:
Annamalai S, Gopichandran V. Knowledge, attitudes and utilization of food labels among undergraduate medical students in a medical college in Chennai – A cross sectional survey. Indian J Community Fam Med 2022;8:33-8

How to cite this URL:
Annamalai S, Gopichandran V. Knowledge, attitudes and utilization of food labels among undergraduate medical students in a medical college in Chennai – A cross sectional survey. Indian J Community Fam Med [serial online] 2022 [cited 2022 Dec 4];8:33-8. Available from: https://www.ijcfm.org/text.asp?2022/8/1/33/349384

  Introduction Top

With the vast expansion of urbanization, long work hours, and adaptation to a sedentary lifestyle, there is a surge in the production and consumption of prepackaged foods.[1] Most of these food items contain food labels, comprising trademarks, brand names, nutritive information, pictorial matter, or symbols relating to the foodstuff that are placed on any packaging, document, notice, ring, or collar accompanying or referring to such foodstuff.[2] Food labeling is a community-based approach providing information about the nutrient content of a food allowing consumers to make better and healthy food choices. Food labeling is important as it contains all the details about the food item, including the nutritive values, the manufacturing/expiry date, ingredients, vegetarian/nonvegetarian, and the price which guides consumers in choosing the right foods.[3] In India, the Food Safety and Standards Authority of India (FSSAI) is the authority which is responsible for regulating and supervising food safety.[4] There is a global increase in prevalence of noncommunicable diseases such as diabetes, hypertension, and heart diseases.[5] Unhealthy food choices, including increased consumptions of prepackaged and refined foods, are important risk factors for noncommunicable diseases.[6] Food labeling can help consumers keep track of what they eat and hence prevent and control noncommunicable diseases.[2] A few studies have shown that although most consumers have a good knowledge and attitude toward food labels, they do not utilize food labels often.[7] Some consumers find it difficult and complicated to understand food labels.[8] This problem arises due to the lack of nutrition knowledge among the people and failure to use simple words to describe the food product in the labels. Consumers also prefer buying food products based on the taste, quality, convenience of use, and the price rather than on the nutritive value. A few consumers do not practice reading the food labels due to time constraint and desire for certain foods.[9] There are also consumers who believe that food labels do not make truthful claims about the nutritional value of the food products.[10] Studies also show that women utilize food labels more frequently than men.[11]

As future doctors, undergraduate medical students must have a sound knowledge and understanding about healthy eating, food labels, and appropriate utilization of food labels. This sound knowledge will help them advise appropriate utilization of food labels to their future patients and hence act as agents of change in the community. Appropriate utilization of food labels will also help them lead a healthy life. This study was designed to assess the awareness of medical students, their attitudes, and their utilization of food labels in a medical college in Chennai.

  Material & Methods Top

We conducted the study among undergraduate students studying in a medical college in Chennai, which is established as a part of an autonomous corporation under the Ministry of Labour and Employment, Government of India. The institution provides undergraduate courses, postgraduate courses, and research facilities. The participants involved in the study were undergraduate medical students in the 1st, 2nd, and 3rd years of M. B. B. S course. Food safety, food hygiene, and food regulation are taught as a part of Community Medicine curriculum across the 1st to 3rd year of MBBS. Therefore, these 3-year students were sampled.

Sample size was calculated as 280 participants, using the formula N = (4 × p × q)/d^2, where P = 40 (assuming that 40% of the students have a good awareness about food labeling in India[12]) and d = 15% of P for a 95% confidence level. We got a sample size of 266.6 which we rounded off to 280. We sampled the required students by convenient sampling method. We approached the students during their lecture with permission from the teaching faculty. We shared the link to the Google Form questionnaire with the class representatives of each class, after explaining the details of the study. The class representative then shared the link in the social media group of the class. Students were encouraged to respond to the questionnaire. We sent a reminder to the class representative after 1 week. We gave one more weeks' time for the students to fill out the questionnaire and then closed the data collection.

The questionnaire contained five sections:

  1. Student information, including name, age, height, weight, year of study, any food allergies, and questions pertaining to lifestyle, i.e., whether they are trying to lose weight, doing regular exercising, and following a strict diet
  2. Content and format of food label: There were questions formed based on the FSSAI packaging and labeling regulation (2011) to assess the general knowledge about food labeling and the FSSAI
  3. Utilization of food label: A table was formed with details present in the label of the food product, and the student had to tick which of the details he/she practiced looking into and how often, for example, the expiry date, FSSAI logo, ingredient list, and nutritional information. Ticking was done under the headings “always,” “often,” “sometimes,” “rarely,” and “never”
  4. Attitude: The questions framed evaluated the attitude of the student toward food labels. The Likert scale used allowed the student to choose the level of agreement he/she had with each statement, for example, whether one believes that food labels can help people with health conditions (i.e., hypertension and allergies) to look out for ingredients to avoid, regulate calorie intake, etc.

The questionnaire was reviewed by experts in community medicine and public health and content validation was done.

We analyzed the data using the Statistical Package for the Social Sciences (IBM SPSS Statistics for Windows, Version 21, Armonk, New York; IBM Corp) software.[13] We described the characteristics of the study population using frequencies and percentages. We computed scores of knowledge, attitude, and practices related to food labels by adding the individual responses to the questions under each domain. Based on the mean score, we categorized people as having good and poor knowledge, attitude, and practices related to food labels. We then used multiple logistic regression analysis to study the factors influencing good knowledge, attitude, and practices. We entered age, sex, body mass index (BMI), year of study, whether they were on a diet, whether they were exercising, whether they were trying to get into shape, and whether they suffered from any specific food allergies in the model to identify the factors influencing the knowledge, attitude, and practices. We used P < 0.05 to indicate statistical significance.

The study was approved by the Institutional Ethics Committee of the ESIC Medical College and PGIMSR, KK Nagar, Chennai, with the IEC No. IEC/2019/2/23 on October 30, 2019. Informed consent was obtained from all the students through the online Google Forms by clicking an icon to indicate consent to participate in the study. All personal identifying information related to the students were kept confidential. The digital data were saved in password-protected files, and only the researchers had access to the data.

  Results Top

We approached a total of 400 students through the class representatives. Out of this, 200 responded to the questionnaires with a response rate of 50%. The characteristics of the study participants are shown in [Table 1]. About 25% were below 19 years of age, and more than 60% were girls. There were more respondents from the 1st & 3rd year than the 2nd year. Only 21% were doing regular exercises and 9% were following a strict diet. About 17.5% were overweight and 3% were obese.
Table 1: Characteristics of the study sample

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The participants had good knowledge regarding food labeling and the rules for appropriate food labeling followed by the FSSAI. Hundred twenty eight (64%) participants knew that health claims or risk reduction claims should not be present on the label of food packaging. A majority i.e. 171 (85.5%) participants have correctly picked out the color of the symbol on the food label which is green for vegetarian and brown for nonvegetarian. The knowledge on exact objectives of the FSSAI and the details of size of display of the food label details was poor, but all other aspects of knowledge regarding food labeling were good [Table 2]. Very few had negative attitude toward food labeling. Majority felt that food labeling is useful in choosing the right healthy foods and in regulating the diet. Majority of the participants felt that it is a good practice to regularly review food labels [Table 3]. The most frequently examined item in the food label was the expiry date, with more than 75% viewing it always. About 46% of the participants look for the veg/nonveg symbol in the food label. Nutrition information and information about food additives were viewed less frequently [Table 4]. It is seen that knowledge scores are normally distributed, whereas attitudes and practices scores were skewed, with more students having higher scores [Figure 1]. Female students had a 3.4 times greater odds of good knowledge (1.59 to 7.25) compared to the men, and students aged 21 years had 0.2 times lesser odds of good knowledge compared to students aged 17 years (0.054–0.832). Other risk factors such as BMI, year of study, and lifestyle factors did not influence knowledge on food labels. None of the above factors influenced the attitudes of the students toward food labels. While those who exercised regularly had a 2.7 times greater odds of utilizing food labels (1.142–6.587) well, those who followed a strict diet had a 0.297 times lesser odds of utilizing food labels (0.089–0.994) compared to those who did not [Table 5].
Figure 1: The distribution of the scores of knowledge (a), attitudes (b), and practices (c) regarding food labels among the surveyed medical college students

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Table 2: Responses to questions on knowledge regarding food safety and food labeling

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Table 3: Attitude toward food labeling

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Table 4: Practices with respect to using the food labels

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Table 5: Factors influencing knowledge about food labels

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  Discussion Top

This study aimed at understanding the awareness, attitude, and utilization of food labels by undergraduate medical students in a college in Chennai. We found that students had good knowledge about the Food Safety and Standards Authority of India and their functions. They were familiar with most aspects of food labeling and the rules governing it. They had positive attitudes toward food labels and felt that they are helpful and useful. However, despite the good knowledge and positive attitudes, they did not utilize the food labels adequately to know about the nutritive contents of the foods, the additives, and the details of the manufacturer, with most of them only going through the expiry date of the product. Women had better knowledge about food labeling, and students who were regularly exercising utilized food labels appropriately. Those who were on diet regulation utilized food labels poorly.

We found that the medical students in this study had a sound knowledge about food labels and the functions of the regulatory authority in India. Previous studies among college-going students, both medical and nonmedical, have observed that both knowledge and utilization of food labels are high, with medical students having higher levels of knowledge than nonmedical.[14],[15],[16],[17] A sound knowledge about food labels and the regulation of food and nutrition labeling is important for a medical student as it prepares the student to create awareness among the patients. It also is important for the medical students to practice appropriate use of food labels themselves in order to stay healthy. The current undergraduate medical curriculum does not include sections on food labels and counseling people on the appropriate use of food labels.[18] It may be useful to incorporate it in the curriculum under food safety and food hygiene. We found that students have a positive attitude toward food labels. They felt that food labels help patients choose their foods appropriately to prevent diseases and stay healthy. However, despite this good knowledge and attitude, their food label utilization was poor. While a majority of the students used the food label to check for “best before” date of expiry, they did not appropriately utilize the nutritive information, information about additives, and details of the manufacturer. This finding is similar to previous studies among medical as well as nonmedical students. Only 45%–50% of the medical as well as nonmedical students used food labels appropriately.[17] Previous studies have also shown that only about 30%–35% of the students use the information obtained from food labels to appropriately adjust their dietary intake.[14] We found that women had greater awareness about food labels compared to men. Those who were 21 years old had lesser knowledge compared to those who were 17 years (in the 1st year of their undergraduate course). One of the possible reasons is that at 21, the students are very busy with no room for checking the label in their food. Those students who exercised or visited a gym regularly were utilizing food labels better than those who did not. This is probably because of the heightened awareness about healthy eating among those who are making efforts to lose weight or stay fit. None of the studied risk factors including year of study, age, sex, BMI, or lifestyle changes seemed to influence attitude toward food labeling, indicating that all the students had highly positive attitude. However, when it came to utilization of food labels, only the ones who were attempting to lose weight used it appropriately. It was also found that those who were on a strict diet had a lesser chance of utilizing the food labels appropriately. This is probably because when there is a strict diet control, the use of prepackaged and labeled foods in itself reduces.

This study has several limitations. The study was conducted in one medical college in Chennai, and therefore, the findings are not representative of all medical students of Chennai. The sample size is relatively small, and therefore, it is likely that the estimates are underpowered. There is a possibility of a socially desirable response in answering practice and attitude questions related to food labeling. However, despite these limitations, the study provides valuable information on levels of utilization of food labels among medical students.

  Conclusion Top

Medical students had a sound knowledge and good attitude toward food labels, but their food label utilization patterns were poor. There is a need to incorporate “food labelling” as a topic in the undergraduate medical curriculum and inculcate better food label utilization behaviour.


The authors would like to acknowledge the support of Dr. Praveena P, Assistant Professor, Department of Community Medicine, SRM Medical College, Tiruchirappalli.

Financial support and sponsorship


Conflicts of interest

There are no conflicts of interest.

  References Top

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  [Figure 1]

  [Table 1], [Table 2], [Table 3], [Table 4], [Table 5]


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