Research has shown that the omega-3 polyunsaturated fatty acids are some of the most effective natural anti-inflammatory agents available.[12,23–25,27,50,85] With the discovery that vascular inflammation is the underlying cause of coronary artery disease, fish and fish oil supplements are now recommended by the American Heart Association for the prevention of this disease.[12,23–25,27,50,85] Countries that have the highest fish consumption also have a lower incidence of neurodegenerative disease and depression.[12,23–25,27,50,85] The biological basis for the effectiveness of fish oil in treating arthritis has been well documented with many positive clinical studies, when compared to traditional pharmaceutical anti-inflammatory agents.[12,23–25,27,50,85]
The Boswellia species are trees located in India, Ethiopia, Somalia, and the Arabian Peninsula, and they produce a gum resin called olibanum, better known in the western world as frankincense. This resin possesses anti-inflammatory, anti-arthritic, and analgesic properties. Boswellia can inhibit the leukotriene biosynthesis in neutrophilic granulocytes by inhibiting 5-LOX, thus affecting various inflammatory diseases that are perpetuated by leukotrienes.[95] Clinically, the substance is used in the treatment of degenerative and inflammatory joint disorders. It reduces the total white blood cell count in joint fluid, and it also inhibits leukocyte elastase, which is released in rheumatoid arthritis. In one recent study, a statistically significant improvement in arthritis of the knee was shown after 8 weeks of treatment with 333 mg B. serrata extract taken three times a day. The treatment improved function, but radiographically there was no change in the affected joints.[62]

NSAIDs don’t just damage your gut lining. They affect your gut bacteria, too. A study of regular users found that different NSAIDs caused different changes in gut bacteria.[5] Ibuprofen and arthritis drug celecoxib (Celebrex), for example, increased pathogenic Enterobacteriaceae, a family of bacteria that includes E. coli, Salmonella, and a number of lesser-known bacteria that contribute to eye, skin, respiratory, and urinary tract infections.[6]