It sounds so strange- how could our SKIN be a part of our immune system? Isn’t our immune system inside our body? Yes and No, let’s start with some “skin” facts to set the stage.
The skin is the largest organ in your entire body!! Read that again. Let it sink in.
Our skin is our first line of defense against the outside world.
Environmental toxins, bug bites, cuts, scratches, burns- everything!! It is constantly working 24/7 to protect us from pathogens, bacteria and viruses. So how does it do that? With its immunity!
The skins immune system is home to roughly 20 billion T-cells. 20 billion! That’s more than the T-cells in your blood- which is pretty crazy. These specialized fighting cells are in charge of protecting the body from infection, cancer, toxins, autoimmunity, and our external environment. The skin’s layers contain cells from both the innate and adaptive immune systems - which allow the skin to actively fight infections, bacteria and viruses if/when exposed.
“Topically the skin is home to over 1,000 bacterial and fungal species that inhabit different parts of the skin. These helpful microbiota promote skin immunity by inducing a basal level of immune activation, which protects us against other infections."
“Internally our immune system is comprised of special organs, cells and chemicals that fight infection/disease. The main parts of the immune system are: white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow. These are the parts of your immune system that actively fight infection.”
As you can see the skin is a dynamic organ made of different layers of cells and their related glands. These immune protective layers are activated when the tissue is under attack. When these immune cells are triggered they go to work by capturing, processing and destroying the invader. Think of your skin as the front line of soldiers in a war. They are ready, willing and capable of stopping and destroying any invaders your skin comes in contact with.