The main fatty acid that makes up omega-9 is oleic acid. Omega-9s are involved in stabilizing blood sugar levels, boosting the immune system, regulating metabolism, reducing nerve irritation, keeping muscle in shape, and regulating muscle function. Along with omega-3, it also reduces malignant cells and prevents heart attack and stroke.
Sources: Omega-9 fatty acids are found in olives and olive oil, nuts and seeds, almonds and peanut oil and animal fats.
Complications of Deficiency: Omega-9 deficiency has several side effects, including weakened immune systems, osteoarthritis, depression, weakness and fatigue, high blood pressure, hair loss, and excessive dandruff.