Organic compounds are ones based on the elements hydrogen and carbon. Though the compounds may contain other elements, such as nitrogen, phosphorus or oxygen, all organic molecules are based on a hydrocarbon backbone. Organic molecules make up a significant portion of your diet, and they are found in all the foods you eat. A number of organic molecules are required in your diet to keep your cells and tissues healthy.
One type of organic molecule that must be present in your diet is protein. Proteins are made up of chains of organic molecules, called amino acids. Your body uses combinations of 20 different amino acids, arranged in specific sequences, to make the thousands of unique human proteins present in your cells and tissues. Protein in your diet is important to provide a source of amino acids -- protein is broken down within your stomach and small intestines, and the amino acids that make up that dietary protein are absorbed into your body and used to make your own proteins. Proteins are found in meat as well as beans and legumes, and the Harvard School of Public Health recommends consuming 0.8 to 1 g of protein in your diet for every kilogram of body weight to help maintain healthy cells and tissues.
Another essential type of organic molecule you must consume in your diets are lipids. Lipids may come in the form of fats, usually from animal sources, or oils and waxes derived from plant sources. Many plant and animal fats are found in the form of triglycerides -- three fatty acid chains, each bonded to a glycerol sugar backbone. Lipids can provide a source of energy for your cells, and also have role in proper tissue maintenance and functioning. There are two types of essential fatty acids: omega-3 and omega-6. According to the Linus Pauling Institute at Oregon State University, omega-6 fatty acids are found in safflower and sunflower oils, while omega-3 fatty acids are found in walnut oil, nuts and fish.
Carbohydrates include starches, the main components of breads and pastas, or simple sugars, found in fruits, vegetables, dairy products and sweets. Carbohydrates serve as a source of energy for your cells -- upon consumption, your body metabolizes carbohydrates into glycogen and glucose, which provide energy to keep your body running. The Franklin Institute explains that your brain relies on glucose to function, and a lack of carbohydrates in your diet can lead to diminished cognitive ability. When eating carbohydrates, choose foods made from whole grains such as 100 percent whole wheat bread, or natural sources of sugar, such as fruit.