“Eating cheese before bed gives you nightmares.”

The notion that eating cheese before bed causes nightmares is a persistent belief, deeply rooted in popular culture and folklore. This misconception gained significant traction from literary works like Charles Dickens' "A Christmas Carol," where Ebenezer Scrooge famously attributes his ghostly visions to "a crumb of cheese." Later, the early 1900s comic strip "Dream of the Rarebit Fiend" further cemented the idea, depicting characters plagued by bizarre dreams after consuming Welsh rarebit, a dish of melted cheese on toast. These cultural touchstones helped weave the "cheese dream" into the fabric of common understanding, making it an old wives' tale passed down through generations.

Scientifically, there is no direct evidence to support a universal link between cheese consumption and nightmares for everyone. While some theories suggest that tyramine, a compound found in cheese, could influence brain activity related to dreams, many other foods also contain tyramine without carrying the same reputation. In fact, cheese contains tryptophan, an amino acid that can promote the production of serotonin and melatonin, which are neurotransmitters crucial for regulating sleep and mood, potentially even aiding restful sleep.

However, recent research offers a plausible explanation for why some individuals associate cheese with disturbing dreams. A 2025 study published in "Frontiers in Psychology" found a strong correlation between nightmares and lactose intolerance. For those with lactose intolerance, consuming dairy products like cheese before bed can lead to gastrointestinal discomfort, such as gas or stomach pain, which can disrupt sleep and make dreams more vivid and memorable, including unpleasant ones. This physical distress during sleep, rather than any inherent nightmare-inducing quality of cheese, appears to be the real culprit. Additionally, eating any heavy or fatty meal close to bedtime can generally cause indigestion and interrupt sleep, increasing the likelihood of remembering dreams, whether good or bad. Therefore, the myth likely persists because for some, the digestive consequences of cheese consumption can indeed lead to a restless night and more vivid dreams.