Many men and women struggle with autoimmune diseases. In healthy people, the immune system is one of the most amazing systems within the body. It powers up when it comes to fighting off ailments and disease in the body. It aids in keeping organs working well. And, it works alongside the body's other systems to keep you healthy. However, sometimes the immune system doesn't work the way it should. In cases of auto-immune diseases, the immune system can sometimes work against the healthy tissues and components of the body. In some of these situations, hair loss can occur.