Cheese May Really Be Giving You Nightmares, Scientists Find

Scientists have found that eating too much dairy could ruin your sleep. Researchers questioned more than 1,000 students about the quality of their sleep, their eating habits, and any perceived link between the two, and found a strong association between nightmares and lactose intolerance — potentially because gas or stomach pain during the night affects people’s dreams.

“Nightmare severity is robustly associated with lactose intolerance and other food allergies,” said Dr Tore Nielsen of Université de Montréal, lead author of the article in Frontiers in Psychology. “These new findings imply that changing eating habits for people with some food sensitivities could alleviate nightmares. They could also explain why people so often blame dairy for bad dreams!”

Sweet dreams?

Although folk beliefs have long held that what you eat affects how you sleep, there’s very little evidence to prove or disprove them. To investigate, researchers surveyed 1,082 students at MacEwan University. They asked about sleep time and quality, dreams and nightmares, and any perceived association between different kinds of dreams and different foods. They also asked about participants’ mental and physical health and their relationship with food.