Role of Yoga is Immune System

Your body's immune system is central to your overall health. It detects invaders and protects you from them, whether they are toxins or disease-causing agents such as bacteria and viruses. When it is working well, your immune system prevents chronic diseases, fights infections, and increases your longevity. When it doesn't work as it should, even if the rest of your body is humming along, trouble lies ahead. 

The immune system can malfunction in two ways. First, it can over-react to a substance that normally isn't a dangerous threat (for instance, to pollen, thus causing an allergic reaction, or to other substances, thus causing arthritis or lupus). Second, it can weaken and fail to react when it should, thus allowing the growth of the cancerous cells, the spread of herpes viruses or the development of conditions such as chronic fatigue syndrome. A weakened immune system also makes you more susceptible to less serious conditions, such as colds and flu. 

The Immune System

Medical scientists identified the first immune deficiency disease in the 1950s. The most well known, Acquired Immune Deficiency Syndrome, or AIDS appeared on the national scene only within the past fifteen years. The major organs of the immune systems are dispersed throughout the body. These include the lymph nodes (grouped along lymphatic vessels), bone marrow (in the core of bones), the thymus (in the upper part of the chest), and the spleen (on the left side of the abdomen). These and other organs produce and store an array of white blood cells and specialised immune cells that go by names such as T cells (T for thymus), lymphocytes, neutron phils, mast cells, macrophages, and B cells (B for Bone). These cells variously help the body to identify the invading agents, produce antibodies that neutralise or destroy them, turn off the immune reaction when it is no longer needed, and remember the whole process for future reference. 

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