The main manifestations of low immunity in women are easy to catch a cold, depression, fatigue, loss of appetite, sleep disorders, the causes of low immunity vary, if the symptoms of discomfort continue not to improve, it is recommended to consult a doctor to check whether it is caused by disease. 1, easy to catch a cold: when the body’s immunity is reduced, the resistance to external pathogens such as bacteria, viruses will be reduced, more prone to infection, common The upper respiratory tract infections, is commonly known as the cold; 2, depression: mental state is one of the most direct expression of brain activity, if women sleep enough, usually work not very tired, but still have a poor mental state phenomenon, may be the body’s immune system decline; 3, fatigue: fatigue and weakness phenomenon may also be caused by reduced resistance; 4, loss of appetite : lower immunity is also prone to lower gastrointestinal function, resulting in constipation, loss of appetite, indigestion, diarrhea and other symptoms of gastrointestinal discomfort; 5, sleep disorders: sleep disorders, that is, insomnia, and low immunity of the human body is closely related. Insomnia can lead to the liver function is affected, resulting in the ability to synthesize immune factors decreased, and the decline in immunity will aggravate the symptoms of insomnia, so the vicious circle, and ultimately will affect the health. Women can improve their immunity by reasonable means, such as ensuring the length and quality of sleep, supplementing a highly nutritious diet, paying attention to exercise and maintaining a tidy environment, etc. If this still does not work, they need to seek medical examination as soon as possible to discover the cause.