How do i reduce the swelling of the lymph-nodes under my neck!?

Monitoring Centers: The lymphatic system absorbs and carries things too big to go into the arteries and veins like bacteria eaten by white cells and digested food. The lymph nodes "taste" the lymph to see if anything bad is there like bacteria, viruses, cancers, etc. When it detects a problem, it alerts the immune system by enlarging in response. Prolonged enlargement should be biopsied. If no problem, they shrink.