Osteoarthritis (OA) is a degenerative and progressive disease of joints that can be a result of injury, hip or elbow dysplasia, Lyme’s disease, and obesity. Diagnosis involves physical examination and x-rays. In some cases, extensive testing is required to rule out other arthritic conditions like Lyme disease and rheumatoid arthritis. Obesity aggravates joint inflammation so maintain a healthy weight is one of the most important treatments for osteoarthritis. Medical therapy includes a combination of therapies to decrease inflammation and manage pain. Anti-inflammatory medications are prescribed to relieve painful episodes. The required dose of anti-inflammatory drugs to minimize inflammation can significantly be decreased by introducing the food additives like glucosamine products and omega-3 fatty acids to the patient’s diet. To strengthen the muscles and to keep the joints active, physical therapy and weight loss programs are introduced.