What Is a Lymph Node?

Here's something interesting you should know about lymph nodes and your immune system. 

Timestamps
0:08 The lymphatic system 
0:45 Most important lymph nodes function 
1:37 What's inside a lymph node? 
4:50 What happens in the lymph node
5:25 What can cause issues with the lymphatic system? 

In this video, we're going to talk about lymph nodes and your immune system.

You can think of the lymphatic system as a back-up drainage system to prevent excess fluid retention. But, this is just a minor function. The big function is the activation of the immune system. 

 One of the purposes of the lymph nodes is to keep a pathogen from spreading throughout the body. You will have an entire war going on within the lymph nodes if there is a pathogenic microbe.

A person has hundreds of lymph nodes throughout the body. Inside of a lymph node, there are lymphocytes. There are three primary lymphocytes:

1. Natural killer cells (kill viral-infected cells)
2. T cells (kill specific microbes and determine self from non-self)
3. B cells (make antibodies)

Inside of the lymph node:
• There are a lot of antibody reactions going on
• The immune system presents tiny parts of pathogens to the T cells 
• There is a lot of lymph-blood exchange 
• It filters certain cancer cells

The spleen is the largest lymph node. When someone has their spleen out, they have an increased risk of infection. Chronic stress activates cortisol, which then can shrink the lymphatic system. A zinc deficiency is another thing that can cause issues with the spleen and the entire lymphatic system.

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Dr. Eric Berg DC Bio:
Dr. Berg, 56 years of age is a chiropractor who specializes in Healthy Ketosis & Intermittent Fasting. He is the author of The New Body Type Guide and other books published by KB Publishing. He has taught students nutrition as an adjunct professor at Howard University. He no longer practices, but focuses on health education through social media.

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Disclaimer:
Dr. Eric Berg received his Doctor of Chiropractic degree from Palmer College of Chiropractic in 1988. His use of “doctor” or “Dr.” in relation to himself solely refers to that degree. Dr. Berg is a licensed chiropractor in Virginia, California, and Louisiana, but he no longer practices chiropractic in any state and does not see patients so he can focus on educating people as a full time activity, yet he maintains an active license. This video is for general informational purposes only. It should not be used to self-diagnose and it is not a substitute for a medical exam, cure, treatment, diagnosis, and prescription or recommendation. It does not create a doctor-patient relationship between Dr. Berg and you. You should not make any change in your health regimen or diet before first consulting a physician and obtaining a medical exam, diagnosis, and recommendation. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.

Thanks for watching! I hope this video helps you better understand lymph nodes and the immune system.