The study included 498 individuals aged 19-65. Data were collected using a demographic survey, Three-Day Food Consumption Record Form, and the International Physical Activity Questionnaire. The Three-Day Food Consumption Record Form was used to calculate the MNI and HEI-2015.

The My Nutrition Index (MNI), developed by Busgang et al. (2022), evaluates 34 dietary components, including fats, proteins, carbohydrates, vitamins, minerals, and electrolytes. The index is calculated based on 3-day food consumption records, considering factors like height, weight, gender, age, activity level, and lifestyle factors such as alcohol, smoking, and caffeine intake. MNI consists of four sub-dimensions: Macronutrient, Electrolyte, Vitamin, and Mineral Index, with scores ranging from 0 to 100, reflecting diet quality. The validity of the index was compared to the Healthy Eating Index-2015 (HEI-2015).

The Healthy Eating Index (HEI) was updated in 2015 and consists of 9 adequacy components: Whole Fruits, Total Fruits, Greens and Beans, Total Vegetables, Dairy, Whole Grains, Fatty Acids, Total Protein Foods, and Seafood and Plant Proteins, as well as 4 moderation components: Sodium, Refined Grains, Added Sugars, and Saturated Fats, resulting in a total of 13 components. HEI-2015 was calculated using the data obtained from the 3-day food consumption records of individuals. The index yields a minimum score of 0 and a maximum score of 100, with higher scores indicating better diet quality. Diet quality is categorized as follows: >80 represents good diet quality, 51-80 represents a diet quality that needs improvement, and ≤50 represents poor diet quality.

In this study, the International Physical Activity Questionnaire Short Form (IPAQ) was utilized to determine the physical activity levels of the participants. The form, consisting of seven questions, provides information on sitting time, walking, moderately vigorous activities, and time spent in vigorous activities. The values obtained were evaluated according to the 'International Physical Activity Questionnaire Assessment Guide.' Based on this guideline, participants were classified into three categories: sedentary or less active, moderately active, and very active