​The flesh of a cow, bull, or ox, used as food.
The association between consumption of red and processed meats and cancer (particularly colorectal cancer and potentially lung, esophageal, stomach, pancreatic, and endometrial cancers), is very consistent, yet small amounts of red meat might provide nutrients such as B12, zinc and protein. Leanest cuts of beef eye round and bottom round; chuck shoulder steaks; filet mignon; flank steak; and arm roasts. It is recommended to not eat ground red meat that is less than 95% lean. Frozen burger patties may contain as much as 50% fat; check the nutrition facts box. Some grilling favorites are high in fat: hot dogs, rib eyes, flat iron steaks, and some parts of the brisket (the flat half is considered lean).

meat of a cold-blooded animal living wholly in water, breathing with gills, usually with fins and scales.
Fish can be part of a healthy diet providing important nutrients, including omega-3 fats, but it may also contain unhealthy chemicals, like mercury.

animal flesh used as food. 
Most common types of meat are Poultry (chicken, turkey, cornish hen), Game (buffalo, ostrich, rabbit, venison, dove, duck, goose, pheasant), Beef, Pork, Veal, and Lamb. Less common examples are meat of turtles, iguana, guinea pigs, emus, maggots, camels, dolphins, cassowaries, dogs, jellyfish, and insects.    
White meat or light meat refers to the lighter-colored meat made up of fast-twitch muscle fibers, while red, or dark meat is made up of muscles with fibers that are slow-twitch

Pea sized white beans with fairly mild flavor and dense texture. A type of kidney beans, it was a staple food of the United States Navy in the early 20th century. Navy beans are also known by a variety of other names, including haricot beans, Boston beans, pea beans, and Yankee beans. Excellent source of cholesterol-lowering fiber, Can be used in a variety of dishes such as soups (zuppa and minestra), and chili.

cephalopod mollusks (Octopus and other genera, order Octopoda) with eight tenacles (sucker-bearing arms bearing two rows of suckers), a large distinct head with a strong beak-like mouth, and a soft saclike body. Also called devilfish.
Octopus is a seafood dish, common ingredient in oriental, oceanic, and Mediterranean cuisines including sushi, takoyaki and akashiyaki, steamed and roasted varieties. In Korea, some small species are sometimes eaten alive.

macronutrient used for growth and repair of tissues. As it is vital for many physiological processes, inadequate protein intake may cause hormonal disorders, muscle wasting, affect skin and impair immunity.  The American Dietetic Association recommends 0.36 g of protein per pound of body weight (recommended daily allowance). The National Strength and Conditioning Association (NSCA) recommends that active people consume 0.4 g to 0.6 g per pound of body weight with as much as 0.8 g for a competitive athlete.

Too much protein can lead to increase in liver enzymes, kidney problems and leaky gut. High protein diets lead to high urinary creatinine while low protein dieting leads to urine saturated with citric acid.
A deficiency in protein leads to muscle atrophy, impaired immune system and weaker bones. Dietary protein intake was shown to be inversely associated with risk of stroke in women with hypertension. Lean animal protein like fish showed most protective benefit.  

All foods made from meat, poultry, seafood, beans and peas, eggs, processed soy products, nuts, and seeds are considered part of the Protein Foods Group. These are foods that are high in animal or plant protein. Usually this mean about 10 grams or more of protein in one serving. Beans and peas are also part of the Vegetable Group. Nuts are technically fruit, while seeds are a part of a plant that distinguishes fruits from vegetables.  Grains, which are really just oversized seeds, are also fruits.

In general, 1 ounce of meat, poultry or fish (7 g protein), ¼ cup cooked beans (~4 grams protein), 1 egg (6 g protein), 1 tablespoon of peanut butter (4 g protein), or ½ ounce of nuts or seeds (6 g protein) can be considered as 1 ounce-equivalent from the Protein Foods Group. This is about half or a third of a serving.  
Foods in the protein group provide vital nutrients for optimal health and maintenance of the body.

• Seeds, nuts, eggs, dry beans and peas, fish, poultry, and meat offer a number of nutrients that include magnesium, zinc, iron, vitamin E, niacin, thiamin, B6, riboflavin, and of course protein.
• Protein acts as the body’s building block for muscles, bones, cartilage, skin and the blood. They are also building blocks for important functional levels of hormones, enzymes, and vitamins. Proteins also provide calories.
• B vitamins help with the nervous system and helps build tissues; iron carries oxygen in the blood; magnesium helps builds bones and energy release from muscles.

dietary and bodybuilding supplements that supply extra protein.
​Although they are not supposed recorded measurable amounts of free-form amino acids, which spike protein content in standard laboratory tests but add little nutritional benefit (beyond physiologically appropriate proportions). Asparagine was the most commonly spiked amino acid (15/74 products), followed by alanine (11/74), glycine (8/74), taurine (8/74), and leucine (7/74). Histidine, glutamine, alanine, cysteine, and taurine were the highest-risk amino acids, recording the most severe spikes in our batch analysis, respectively.

Plant's unit of reproduction, a ripened ovule. 
All foods made from meat, poultry, seafood, beans and peas, eggs, processed soy products, nuts, and seeds are considered part of the Protein Foods Group (formerly Meat and Beans group). In general, 1 ounce of meat, poultry or fish, ¼ cup cooked beans, 1 egg, 1 tablespoon of peanut butter, or ½ ounce of nuts or seeds can be considered as 1 ounce-equivalent from the Protein Foods Group. 1 tablespoon of seeds is about ½ ounce. Examples of edible seeds include Sesame seeds, Chia seeds, Flax seeds, Hemp seeds and Sunflower seeds. Beans are large seeds of Legume plants, Cereals (Grains) are processed seeds. Nuts are one-seeded fruits that are not distinguishable from their seeds (acorn, chestnut, hazelnut, beech, filbert) or large seeds that are treated as nuts in culinary (peanuts, cashews, coconuts, litchi, pistachio, almond, walnut).