A Spanish doctor warns that eating certain fruits late in the evening—despite their health benefits—may lead to fragmented sleep and more nighttime bathroom trips
It’s easy to reach for a bowl of watermelon, pineapple, or melon as a light, refreshing snack before bed. But according to reporting from El Confidencial, a Spanish radiologist is sounding the alarm: these fruits, while packed with nutrients, can actually sabotage your sleep if eaten too late in the day. The culprit isn’t the fruit itself, but the timing and the body’s response to their high water content.
Watermelon and melon are more than 90% water. Eating a generous portion in the evening is almost like drinking a large glass of water right before bed. Your body processes this fluid quickly, which means your kidneys ramp up urine production just as you’re trying to wind down. The result? More frequent nighttime trips to the bathroom, which can fragment your sleep and make it harder to reach the deep, restorative stages your brain and body need.
Pineapple brings its own twist. In addition to being hydrating, it contains bromelain, an enzyme that speeds up digestion. While bromelain can help break down proteins and reduce inflammation, it also stimulates the digestive system at a time when your body should be slowing down. For some, this can delay the onset of sleep or cause mild digestive discomfort that keeps you awake longer than planned.
These effects aren’t just theoretical. The Sleep Foundation notes that nocturia—waking up at night to urinate—is a leading cause of daytime fatigue, especially in adults over 40. Their guidance is clear: limit high-water foods and drinks in the two hours before bedtime to reduce the risk of sleep disruption. This advice echoes what many sleep specialists recommend for people struggling with insomnia or frequent night waking.
It’s not about demonizing healthy foods. Watermelon, pineapple, and melon are rich in vitamin C, antioxidants, and fiber. The key is to shift when you eat them. Enjoying these fruits as a mid-morning snack or with lunch lets you benefit from their nutrients without risking a restless night. For those who already deal with light sleep, reflux, or frequent nighttime urination, this small change can make a noticeable difference.
As Psytheater.com has previously explored in the context of magnesium supplements, the timing of what you eat or drink can have a real impact on sleep quality. Choosing the right moment for certain foods or supplements can help you avoid unintended side effects that undermine your rest.
For practical purposes, experts suggest avoiding large servings of high-water fruits within two hours of bedtime. If you’re prone to waking up at night, try limiting your intake even earlier in the evening. And if sleep problems persist despite these changes, consult a healthcare provider to rule out underlying issues like sleep apnea, bladder conditions, or chronic insomnia.
According to the Centers for Disease Control and Prevention, about 35% of American adults report getting less than the recommended seven hours of sleep per night. Nocturia affects up to 50% of adults over age 50, with hydration habits and evening food choices playing a significant role. Simple adjustments—like shifting fruit consumption to earlier in the day—can help reduce sleep interruptions and improve overall rest quality.
