Data analysis is the process of collecting, cleaning, and interpreting data to uncover patterns and trends. In the realm of nutrition, this data can come from various sources, including: National surveys: Large-scale surveys conducted by government agencies like the National Health and Nutrition Examination Survey (NHANES) in the US or the Comprehensive National Nutrition Survey (CNNS) in India provide valuable insights into national dietary patterns. Sales data: Supermarket and restaurant sales data can reveal consumer preferences and shifting trends in food choices. Social media: Analysis of social media posts and online food communities can shed light on popular food trends, dietary fads, and consumer sentiment towards various food products. Wearable technology data: Devices like fitness trackers can provide data on physical activity levels, which can be linked to dietary choices.