04/29/2026
Unfortunately, eating junk food and not getting enough sleep often go hand in hand. Have you ever wondered why you tend to eat less healthily when you're tired?
Highly processed foods (such as breads, pastries, and chips) increase levels of inflammatory molecules in the body. These pro-inflammatory signaling molecules are linked to sleep disturbances, such as insomnia and non-restorative sleep. Inflammation caused by processed foods also changes our gut microbiome, which plays a vital role in sleep regulation.
Lack of sleep lowers leptin levels, a hormone that signals fullness, while also increasing ghrelin, a hormone that stimulates hunger. This is why, when we are sleep-deprived, we often feel much hungrier and crave junk food more. Consuming more processed foods further promotes inflammation and disrupts the gut microbiome, leading to poorer sleep.
This creates a cycle of poor eating and poor sleep that can disrupt our bodies' balance. Reducing processed foods and choosing a nutrient-rich diet based on whole, unprocessed foods can improve sleep quality. The more rested we are, the more likely we are to make healthier food choices.