Shift work has been linked to certain chronic diseases and illnesses. Long-term night shift work is associated with an increased risk of certain cancers, as well as metabolic problems, heart disease, ulcers, gastrointestinal problems and obesity. Insufficient sleep has been shown to change metabolism and appetite, and studies have shown that shift workers have higher levels of triglycerides than day workers. Added to these biological factors, shift workers sometimes have irregular eating habits and poor diet—both of which could increase their risk of metabolic problems as well.

It affects you physically, mentally, your performance and safety is also an issue.