Not getting enough sleep and eating a regular diet of junk food will have what effect on the immune system?

Sleep deprivation and unhealthy food intake suppresses immune system function. Or, as Balachandran puts it, "The more all-nighters you pull, the more likely you are to decrease your body’s ability to respond to sickness and bacterial infections." Our immune system is designed to protect us from colds, flu, and other ailments due to lack of balance of having correct sleeping time and diet immune system will be low.