Eating Onions at Night: What Doctors Say About Sleep and Digestion
Onions are a staple ingredient in kitchens around the world. They’re loved for their bold flavor, affordability, and impressive health benefits. But according to doctors and sleep specialists, eating onions at night may affect your sleep in ways many people don’t expect—both positively and negatively.
So should you avoid onions before bed, or could they actually help you sleep better? The answer depends on how they’re prepared, how much you eat, and your individual digestion.
Why Onions Can Disrupt Sleep for Some People
Doctors explain that onions—especially raw onions—are rich in sulfur-containing compounds and natural fructans. While these compounds support immunity and heart health, they can cause digestive discomfort in sensitive individuals.
At night, digestion naturally slows down. Eating onions close to bedtime may lead to:
Acid reflux or heartburn, particularly in people with GERD
Gas and bloating, which can cause pressure and discomfort when lying down
Stomach irritation, making it harder to relax and fall asleep
Gastroenterologists note that reflux symptoms are more likely when you lie flat, which is why onions eaten at dinner or as late-night snacks can disturb sleep quality.
The Surprising Way Onions May Help Sleep
