A carboxylic acid with an 18-carbon chain and three cis double bonds, Alpha-linolenic acid (ALA) is an?n-3 fatty acid that is essential in the diet because it cannot be synthesized by humans. Primary sources include soybean oil, canola oil, walnuts, and flaxseed. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are very long chain?n-3 fatty acids that are contained in fish and shellfish. Also called omega-3 fatty acids.

A carboxylic acid with an 18-carbon chain and two cis double bonds, Linoleic acid (LA), one of the?n-6 fatty acids, is essential in the diet because it cannot be synthesized by humans. Primary sources are nuts and liquid vegetable oils, including soybean oil, corn oil, and safflower oil. Also called omega-6 fatty acids.

Because no federal rules legislate what constitutes a natural product, there is no clear regulated meaning of the term. The FDA doesn't define it, and the USDA's natural label doesn't verify that meat is hormone and antibiotic free. Until the FDA clearly defines natural and the USDA regulates it, look for the USDA certified organic label, which ensures specific standards are tightly regulated.

See Vitamin B3.

A characteristic of foods and beverages that provide vitamins, minerals, and other substances that contribute to adequate nutrient intakes or may have positive health effects, with little or no solid fats and added sugars, refined starches, and sodium. Ideally, these foods and beverages also are in forms that retain naturally occurring components, such as dietary fiber. All vegetables, fruits, whole grains, seafood, eggs, beans and peas, unsalted nuts and seeds, fat-free and low-fat dairy products, and lean meats and poultry?when prepared with little or no added solid fats, sugars, refined starches, and sodium?are nutrient-dense foods. These foods contribute to meeting food group recommendations within calorie and sodium limits. The term ?nutrient dense? indicates the nutrients and other beneficial substances in a food have not been ?diluted? by the addition of calories from added solid fats, sugars, or refined starches, or by the solid fats naturally present in the food.

The process of the body using food to sustain life. (2) The study of food and diet.

A health supplement grown on molasses, sugar beets or wood pulp. A rich source of vitamin B12 and protein