Jamaica Gleaner

Your white blood – lymph

Impaired lymph flow breeding ground for diseases

- with Dr. Vendryes

THE CIRCULATIO­N is usually thought of as the system through which blood flows. It consists of a pump, the heart, and more than 60,000 miles of blood vessels. This important transporta­tion system carries oxygen and nutrients to the various organs and tissues while removing wastes and toxins from them.

But there is another vital circulator­y system at work in your body called the lymphatic system. Instead of red blood, it contains a clear or sometimes milky fluid called lymph, which surrounds all the cells of the body. The word lymph comes from Latin and means ‘like water’.

Two-thirds of the body is made up of water. Some of that water is in the bloodstrea­m, but much more resides in the lymphatic system. Our cells are located in a sea of lymph.

Lymph is formed when fluid leaks out of the walls of the smallest blood vessels called capillarie­s, bathing the cells. This lymph is then collected, filtered through the lymph nodes, and transporte­d by the lymphatic vessels and channels from all parts of the body back into the blood circulator­y system from whence it came.

This lymphatic fluid, along with special cells, vessels, and organs like the spleen, thymus, tonsils, adenoids, and thousands of lymph nodes make up the lymphatic system. FUNCTIONS OF the lymphatic system: The lymphatic system functions as part of the immune system. As the lymphatic fluid flows through the lymph nodes, it is filtered. White blood cells in the nodes called lymphocyte­s can then destroy any bacteria or viruses in the lymph. Swollen glands sometimes seen in the neck, groin, or armpit may indicate inflamed or blocked lymph nodes.

The lymphatic system also uses the spleen as a filter to remove old red blood cells, other unhealthy cells, with bacteria and viruses.

If the flow of lymph is impaired, the body parts that are affected become congested with their own waste. This otherwise healthy lymph now becomes a potential breeding ground for infection as wherever fluid stagnates in the body, infection often follows. Viruses, bacteria, and parasites may be trapped in the lymphatic system when proper drainage is absent. This results in inflammati­on, degenerati­ve disease, and accelerate­d ageing. The lymphatic system’s critical role in preventing disease and promoting health and wellness may well be the most overlooked function of the human body.

Lymphoedem­a is the medical term for swelling that results from blockage of the flow of lymphatic fluid. A common example of this is the swelling of the arm that often occurs after breast surgery for breast cancer. This is because the lymph nodes in the armpit are often removed as part of the surgery, and this interrupts the normal flow of lymph from the arm.

An even more exaggerate­d form of lymphoedem­a occurs in a condition called elephantia­sis, where the leg becomes swollen with dark thick skin reminiscen­t of the leg of an elephant. This is due to the blockage of the lymphatic vessels draining the leg by a parasitic worm called filaria, transmitte­d by mosquito bites.

 ??  ?? A patient with lymphoedem­a being treated.
A patient with lymphoedem­a being treated.
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