A single species of bacteria that lives in the gut is able to trigger a cascade of immune responses that can ultimately result in the development of arthritis.

Individuals with the sleep disorder narcolepsy suffer with excessive daytime sleepiness and attacks of muscle paralysis triggered by strong emotions (a condition known as cataplexy).

Women who doll up with too much perfume might not know it because they're depressed. That's the conclusion of Dr.

By Brodie, Chris Lupus antibodies in mice alter memory and emotion When antibodies fail to distinguish between your own body and an invading microbe, they make you sick.

Type 1 diabetes often occurs in association with other autoimmune diseases (thyroid disease [1-3], Addison's disease [2], celiac disease [1,3], autoimmune gastropathy [4], and others), with autoimmune thyroiditis being the most common (1-3).