Omega-3 and omega-6 are the fatty acid ingredients most consumers think of first. Fish and fish oils have been highly promoted as containing “good fats” — the fatty acids that provide heart health benefits, including keeping cholesterol levels in check and actually lowering LDL, or "bad cholesterol."

But more recently, a new breed of good fatty acids from avocados and other unsaturated oil sources have become popular. These include olive oil, sesame oil and some nut oils — like walnut, pecan and macadamia. There have been plenty of recent product launches in snacks, baked goods and condiments made with these “better-for-you” oils.

A recent Tufts University study is likely to enhance avocado's already well-established nutritional reputation, since it suggests additional benefits for human eye and brain health too. The research findings indicate a balanced diet that includes fresh avocados may be an effective strategy for cognitive health.

Avocado's health benefits stem from a high level of monounsatured fat, plus significant amounts of potassium, fiber, folate and other essential vitamins and minerals. In addition to oil, avocados star in an increasing array of trendy foods from guacamole and salads to avocado toast and even ice cream.

A similar up-and-coming ingredient to keep an eye on is ghee, which is butter with dairy solids removed. It's high in vitamins A, E and K2, and contains short-chain fatty acids. Ghee’s origins date back more than 3,000 years with its roots in Ayurvedic medicine practiced by sages in India. Known to aid in proper digestion and the absorption of nutrients, the ingredient can currently be found in some specialty brands like 4th & Heart Ghee Butter and Tin Star Foods Brown Butter Ghee.