CARBOHYDRATES
Foods high in carbohydrate include fruits, sweets, soft drinks, breads, pastas, beans, potatoes, bran, rice, and cereals. Carbohydrates are a common source of energy in living organisms; however, no carbohydrate is an essential nutrient in humans. Organisms typically cannot metabolize all types of carbohydrate to yield energy. Glucose is a nearly universal and accessible source of calories.
FRUITS
Fruits are packed with carbohydrates – not all fruits however are super sugary and loaded only with simple carbohydrates – fruits packed with complex carbohydrates include apricots, oranges, plums, pears, grapefruits and prunes.
VEGETABLES
Vegetables are high in water, low in fat, have multiple vitamins and minerals, and most varieties are complex carbs. Broccoli, cauliflower, spinach, turnip greens, eggplant, potatoes, yams, corn, carrots, onions, all types of lettuce, celery, cucumbers, cabbage, artichokes and asparagus are all examples of these.
WHOLE GRAINS
Whole grains are high in fiber, have moderate protein levels, are low in fat and are also a good source of complex carbs. Specific examples include millet, oats, wheat germ, barley, wild rice, brown rice, buckwheat, oat bran, cornmeal and amaranth. Any product that is made from these grains is also complex as well. Whole grain bread, bagels, buns and rolls are examples of these. Also pasta, macaroni and breakfast cereals that are made from whole grains are complex carbohydrates.
GLYCEMIC INDEX
The glycemic index (GI) and glycemic load concepts have been developed to characterize food behavior during human digestion. They rank carbohydrate-rich foods based on the rapidity and magnitude of their effect on blood glucose levels. Glycemic index is a measure of how quickly food glucose is absorbed, while glycemic load is a measure of the total absorbable glucose in foods. The insulin index is a similar, more recent classification method that ranks foods based on their effects on blood insulin levels, which are caused by glucose (or starch) and some amino acids in food.
FATS
Examples of edible animal fats are lard, fish oil, butter/ghee and whale blubber. They are obtained from fats in the milk and meat, as well as from under the skin, of an animal. Examples of edible plant fats include peanut, soya bean, sunflower, sesame, coconut and olive oils, and cocoa butter. Vegetable shortening, used mainly for baking, and margarine, used in baking and as a spread, can be derived from the above oils by hydrogenation.
SATURATED FATS
Saturated fats are mainly in animal foods, such as beef, pork, lamb, butter, cheese, cream, ice cream and other full-fat and low-fat dairy products. It’s also found in tropical palm and coconut oils.
POLY-UNSATURATED FATS
Polyunsaturated oils are the source of essential fatty acids. They used to be ranked highest on the food fat list. But now that food fat is better understood, polyunsaturated fats are known to be a mixed bag.
The reason is clear. Most people get way too much non-nutritious polyunsaturated omega 6 fat in the form of highly refined vegetable oils. This throws off their optimum balance of omega 3 to omega 6 oils.
MONO-UNSATURATED FAT
Monounsaturated fat helps protect against heart disease by lowering LDL (bad cholesterol) and raising HDL (good cholesterol). The best source is extra virgin olive oil. Other good sources include olives, almonds, peanuts, pecans, hazelnuts, avocados and pumpkin and sesame seeds.
It’s best to use mono-unsaturated olive oil for salads and cooking and get your essential fatty acids from whole food sources. These include 100% whole wheat, brown rice and other whole grains, nuts, seeds and beans, especially soybeans, sunflower seeds and walnuts.
Omega 3 with EPA and DHA is considered to be in a class by itself – even though it’s technically polyunsaturated. This is because of the exceptional omega 3 EPA and DHA health benefits, which include reducing your risk of heart disease, type 2 diabetes, some kinds of cancers, arthritis, depression and protection against many other painful and serious diseases.
The best sources of omega 3 with EPA and DHA are salmon, mackerel, herring, tuna, trout, anchovies and good quality omega 3 fish oil capsules. (Note: plant sources of omega 3 do NOT have EPA and DHA.)
Remember that all fats, bad or good, have 9 calories per gram. So even though omega 3 fish oil and olive oil are great for your heart and bacon fat is terrible, each fat gram adds the same amount of calories.
PROTEIN
Humans must obtain some of the 20 foundational amino acids from their diet. The amino acids that an organism cannot synthesize on its own are referred to as essential amino acids. Key enzymes that synthesize certain amino acids are not present in animals — such as aspartokinase, which catalyzes the first step in the synthesis of lysine, methionine, and threonine from aspartate.
Humans obtain amino acids through the consumption of foods containing protein. Ingested proteins are then broken down into amino acids through digestion.Some ingested amino acids are used for protein biosynthesis, while others are converted to glucose. This use of protein as a fuel is particularly important under starvation conditions as it allows the body’s own proteins to be used to support life, particularly those found in muscle tissue. Amino acids are also an important dietary source of nitrogen.
PROTEIN RICH FOODS