New Delhi, 15 Nov (ANI) : A new research has revealed that obesity plays a major role in triggering autoimmune diseases in which the immune system attacks its own body rather than predatory invaders.Obesity leads to a breakdown of the body's protective self-tolerance, creating the optimal environment for autoimmune diseases, and generates a pro-inflammatory environment which is likely to worsen the disease's progression and hinder its treatment.There is a long list of causes of autoimmune disorders which includes infections, smoking, pesticides, lack of vitamins, and so forth but now a new factor has emerged that cannot be ignored which is obesity.