According to a study published in the American Journal of Clinical Nutrition, having your lunch after 3 PM may have a major impact on the speed of your weight loss process. The study specifically observed the working of perilipin protein, which is found in human cells and is important for burning fat throughout the body. At the end of the study, it was found that people with a specific genetic variation of this protein lost less weight when they had their meal post 3 PM.
Another study published in the year 2013 in the International Journal of Obesity also stated that having lunch after 3 PM can slow down the weight loss process. However, both the studies were focused on people with specific genetic makeups.