It is one thing if something fights you but its another thing if you fight yourself. This is the idea behind auto-immunity and what this website is all about.
Auto-immune diseases are conditions whereby "the body fights itself." In that, the immune system mistakenly starts to attack healthy cells and tissues - and fails to shut off the attack. Ordinarily, the immune system should rather fight invading cells and not the bodies own components, but well as said before, its a mistake.
The cause of this immune response; mistake for now is unknown. Some researchers suspect these diseases might be caused by environmental factors whiles others say diet might play a role but one thing is for sure; they are neither contracted nor contagious.
Do diseases like psoriasis and rheumatic fever ring a bell?
Some other examples of these diseases include, Lupus, Addison's disease, Graves disease, Hashimoto's thyroiditis, Pernicious anemia, Rheumatoid arthritis etc.
The following pages of this website will go more into depth about four of these diseases, but before we look at those four, let's delve a bit into where it probably all starts; in our bodies, through to our organs, into our organelles, down in our cells. Let's take a look at genes and immunity.