The timing of food intake is a critical factor in nutrition research, alongside calorie intake and food type.

“And we just started when we eat is also important, that it becomes an important issue to understand when people eat because we do have different methods, for example, 24 hours dietary recall to understand how much and what type of food people ate in the last 24 hours. Similarly, there are methods to measure what diversity of four people have eaten in the last three months or a year to a tool called food frequency questionnaire or FFQ. But there is no method to really understand when people eat.”