Is drinking milk at night good for the stomach?

Apr 22, 2022 Source: Cainiu Health
Dr. Liu Zhengxin
Introduction
Many people develop the habit of drinking a glass of milk before bed in their daily lives, as it can help improve sleep quality. Milk is a nutrient-rich food. However, opinions vary widely regarding whether drinking milk before bedtime is beneficial. Some claim that milk promotes sleep, while others argue that it may irritate the stomach. So, is drinking milk at night good for the stomach?

       Many people develop the habit of drinking a glass of milk before bed in daily life, as it can significantly improve sleep quality. Milk is also a highly nutritious food. However, opinions vary widely regarding whether drinking milk before bedtime is beneficial or not—some claim it aids sleep, while others argue it may irritate the stomach. So, is drinking milk at night good for the stomach?

      Is drinking milk at night good for the stomach?

       Currently, there is no scientific evidence suggesting that drinking milk at night harms the stomach; therefore, it is perfectly safe to consume milk in the evening. Milk contains amino acids—specifically tryptophan—which promote fatigue and drowsiness. Additionally, milk contains trace amounts of opioid-like compounds that exert mild sedative and sleep-inducing effects. Tryptophan in milk serves as a key precursor for serotonin synthesis in the brain; serotonin (5-hydroxytryptamine) plays a crucial role in regulating sleep. However, it’s important to avoid drinking milk immediately before falling asleep—instead, consume it approximately one hour prior to bedtime.

       Drinking a moderate amount of milk in the evening benefits overall health and supports sleep onset. Nevertheless, be sure to drink it well before bedtime—not right before sleeping—and allow sufficient time for digestion. Moreover, consuming milk in the evening tends to yield better sleep-promoting effects than drinking it in the morning. Therefore, it’s essential to adopt proper timing and habits when incorporating milk into your nightly routine.