There are many clinical symptoms and manifestations of decreased resistance: 1. Increased susceptibility to disease, viral colds, bacterial colds and other factors, such as inflammation of the gastrointestinal tract and inflammation of the urinary tract, are more likely to occur. 2. The endocrine metabolic imbalance, such as fatigue, endocrine environment changes, menstrual disorders, etc., are particularly likely to occur when the body resistance is reduced. 4, the resistance is reduced when there are also changes in the nervous system, such as insomnia, forgetfulness, dreaminess, irritability, etc.