But we should know that our body has a blood-brain barrier to prevent many substances in the blood from entering our brain, thus playing a role in protecting the brain. Therefore, tryptophan in the cup of milk that helps you sleep at night must first enter the blood and then enter the brain through the blood-brain barrier. The process is still quite tortuous!
For people with insomnia, drinking a glass of milk before going to bed can promote sleep. However, it is not suitable for everyone. For example, kidney calculi's patients, lactase-deficient people, people with certain digestive diseases, abdominal surgeons, people taking iron-supplementing drugs, etc. People who are not suitable for drinking milk.
Finally, there is insomnia in life. First of all, we should have a correct understanding of insomnia, understand our own emotional changes, improve sleep and emotional conditions through active adjustment, and achieve early detection. If you can't improve, actively seek the help of professionals, seek medical treatment in time, achieve early treatment, and achieve the goal of early recovery.