New research findings published in Cell Metabolism suggest that high saturated fatty acids found in food like sausages, bacon, salami, cakes, cookies, pastries, chocolate and cheese, can cause low level chronic inflammation. The research demonstrates that the inflammation response is due to the fact that saturated fatty acids are also found in the cell membrane of bacteria. The immune system is treating fatty foods as if it is a foreign/harmful bacteria. Essentially, overeating foods high in saturated fat is on par with having a constant low-grade bacterial infection.
Not only do saturated fats clog arteries, add to body weight in fat and increase the risk of developing diabetes, but they also elicit chronic inflammation (which exacerbates nearly all medical conditions). Unfortunately, “America Runs on Dunkin”…
SPM Research and Consulting | Blog 
http://www.medicalnewstoday.com/articles/173472.php — A related study which showed that eating a high fat diet weakens immune response. Taking the two articles together, one might conclude that eating too much fat elicits unnecessary immune responses AND weakens the response when it is actually needed.