Western network news (reporter LAN sunge) recently, the topic of “staying up late is an irreparable injury” has attracted the attention of netizens. The topic said that the damage to the body caused by staying up late can not be ignored. It will not only cause hair loss, but also cause irreversible damage to neurons. What kind of damage does irreparable damage mean? Western network · Shaanxi headline invited Liang Lei, chief physician of Cardiology Department of Shaanxi Provincial People’s Hospital, to answer.