Essential Fatty Acids are “essential” because they are indispensable — and our bodies cannot manufacture them.
Essential fatty acids are building blocks of hormone-like prostaglandins. In addition, essential fatty acids are needed to maintain the integrity of cell membranes. Healthy lipids in cell membranes are essential for cells to properly be able to signal one another.
Problems with cell signaling are associated in many health conditions including cancer and neurological disorders. We must get essential fatty acids from foods or through dietary supplements.
Some essential fatty acids are Omega-3’s, others are Omega-6’s. This has to do with their biochemical structures.