Most people tend to think of inflammation in terms of external signs: swelling, bruising, redness, heat and so on, like when you stub your toe, that immediate pain you feel is the body working in action to help fix whatever just happened. It is a normal and effective response that facilitates healing.Unfortunately, chronic inflammation is a different story and can be caused by diet, stress, lack of exercise, smoking, pollution, and lack of sleep. It can be seen in those with arthritis, fibromyalgia, coeliac disease, and irritable bowel disease. It can also play a part in asthma and diabetes.On occasions, weight gain can also be attributable to inflammation as inflammation in the body makes our weight control hormone (leptin) to be less effective, which therefore causes weight gain. Thus, the two often come hand in hand.