Do you know the symptoms of autoimmune diseases? These include having unexplained body aches, fatigue, constant fatigue and the inability to lose weight. All these symptoms are caused by the immune system attacking itself. Since our immune system is responsible for fighting off all different types of viruses, bacteria, fungi and other pathogens, any disturbance in the normal function of this system results in the production of antibodies which attack our own body. And these antibodies can cause a lot of problems, which explains why some people can be diagnosed with an auto-immune disease even when they do not have these disorders themselves. There are various causes of autoimmune diseases but the root cause or the reason why your body starts to behave strangely has to be identified. This is where the symptoms start. The symptoms of an autoimmune disease are the manifestation of the root causes. It could be from a malfunctioning digestive system, a damaged liver or a hormonal imbalance. It could also be caused by some medications or infections. One of the most common autoimmune diseases is systemic Lupus erythematosus (SLE), also known as the SLE syndrome. Although this syndrome has been diagnosed over a hundred years ago, it is only recently that doctors started to understand the real causes of SLE. One of the causes of SLE is an acquired immune deficiency syndrome (AIDS), which triggers the activation of the white blood cells called the T cells. When the T cells attack the body's healthy cells, the symptoms of SLE appear. Stress is also a very common cause of autoimmune diseases. A person under stressful conditions has a very fast metabolism that helps him/her to produce more adrenaline, cortisol or adrenaline. This is one of the factors that causes the overactive immune system to respond by producing antibodies against the body. Another reason is a deficiency in nutrients, especially Vitamin D, because Vitamin D aids the absorption of calcium, which is one of the important minerals that aid in the strength and development of the bones. Systemic Lupus erythematosus is also a type of autoimmune diseases that can occur in people with a family history of the disease. This is characterized by severe anemia, swelling and redness in the joints, skin and eyes, fatigue, hair loss and rashes. It is caused by the presence of a genetic molecule called AMPase, which is related to the oversensitivity of the white blood cells in the autoantibodies caused by systemic Lupus erythematosus. In fact, this autoantibody results in the accumulation of abnormal proteins in the blood vessels and it is responsible for the redness, swelling and pain that people with SLE often complain about.