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Protein: The Basics and Purpose


With the huge increase in fitness trends, I’m sure you’ve the word “Protein” thrown around at some point in the conversation. So what is it? How much of it do we need? Is it possible to eat too much? These are some important questions for people to know in order to eliminate a lot of confusion associated with this subject.

What is protein

Protein, a macronutrient, is one of the basic building blocks of the human body, making up about 16 percent of our total body weight. Muscle, hair, skin, and connective tissue are mainly made up of protein. However, protein plays a major role in all of the cells and most of the fluids in our bodies. In addition, many of our bodies’ important chemicals — enzymes, hormones, neurotransmitters, and even our DNA — are at least partially made up of protein. Although our bodies are good at “recycling” protein, we use it up constantly, so it is important to continually replace it.

Good High-Protein Foods

Proteins are made up of smaller units called amino acids. Our bodies can manufacture most of the needed amino acids, but nine of them must be gotten from our diets. Animal proteins such as meat, eggs, and dairy products have all the amino acids, and many plants have some of them. Below I’ve listed a few that are great to use.

– Chicken, light meat only
– Turkey breast, skinless, ground
– Sirloin top steak, broiled, lean only
– Salmon, fresh, baked, broiled
– Tuna, canned, solid light in water
– Milk, fat free
– Soy, Nuts, Eggs, Beans
– Black beans, canned
– Boca Burger, Vegan
– Eggs
– Peanut butter, creamy (all natural)
– Soybeans, green, boiled, drained
– Tofu, raw, firm

How much protein do we need?

It completely depends on our age, size, and activity level. The standard method used by nutritionists to estimate our minimum daily protein requirement is to multiply the body weight in kilograms by .8, or weight in pounds by .37. This is the number of grams of protein that should be the daily minimum. According to this method, a person weighing 150lbs, should eat 55 grams of protein per day, a 200-pound person should get 74 grams, and a 250-pound person should eat 92 grams.

Another way to compute protein needs has to do with lean body mass, rather than total body weight (based on the idea that our fat tissue needs less protein to support it). This method is discussed in the Zone Diet and to do this, you will also need to know your body fat percentage.

Do athletes need more protein?

Yes! People engaging in endurance exercise (such as long distance running) or heavy resistive exercise (such as body building) can benefit from additional protein in their diets. The current recommendation is for these athletes to consume 1.2 to 1.5 grams of protein per day for Endurance and 1.5 to 2.2 grams of protein per day for a body builder. Each gauged by kilogram of body weight.

But shouldn’t protein intake be a percentage of total calories?

Quite a few programs and nutritionists quote percentage of calories, usually in the range of 10 percent to 20 percent, as a way to figure out how much protein a person needs to consume daily. This is a rough estimate of a person’s minimum protein needs. It works because typically, larger and more active people need more calories, so the more calories they need, the more protein they will get.

Where this falls down is when people are on diets that are lower in calories for any reason, conscious or not. People who are ill or losing weight, for example, do not need less protein just because they are eating fewer calories — so anyone on a weight loss diet should
not go by the “percent of calories method” for calculating protein needs.

What happens if we don’t eat enough protein?

Unlike fat and glucose, our body has little capacity to store protein. If we were to stop eating protein, our body would start to break down muscle for its needs within a day or so.

Is it “OK” to eat a lot more protein than the minimum recommendations?

This is an important question for people on diets that are higher in protein than usual. In a review of the research, the National Academy of Sciences reported that the only known danger from high-protein diets is for individuals with kidney disease. After careful study, they recommend that 10 percent to 35 percent of daily calories come from protein. They point out that increased protein could be helpful in treating obesity. There is also accumulating evidence that extra protein may help prevent osteoporosis.

Extra protein can be broken down into glucose in a process called gluconeogenesis. On low-carb diets, this happens continually. One benefit of obtaining glucose from protein is that it is absorbed into the bloodstream very slowly, so it doesn’t cause a rapid blood sugar increase. However, some diabetics do find that too much protein causes an excessive blood sugar rise, and low-carbers sometimes find that as time goes on they do better with a moderate protein intake right than eating large amounts of protein.


Having enough protein in your day will not only make you stronger, but aid in the creation of our cells and tissue. Helping is live longer and better lives!

Information provided by Tim Roberts – BodiesByTim.