OVERVIEW OF PROTEINS
Walk into any health food store, and you are overwhelmed with tubs and tubs of various types of protein supplements, with various health claims. However which one is the right one for you? In order to answer this question, it is important to first understand what proteins are and what they do our body. Proteins are 1 of the 3 basic food nutrients that are necessary to sustain life – the other 2 being carbohydrates and fats. Proteins are made of carbon, hydrogen, oxygen, nitrogen and sulfur at times. Next to water, proteins make up the greatest portion of our body weight.
WHAT ARE THE BASIC FUNCTIONS OF PROTEINS
- Proteins provide structure for all living things
- Proteins participate in the vital chemical processes that sustain life
- Proteins make up muscles, ligaments, tendons, organs, glands, nails, hair, and many vital fluids and are essential for the growth of bones
- Proteins also make various hormones and enzymes that catalyze and regulate all bodily processes
- They also help to regulate the body’s water balance and maintain the proper internal Ph
- They also assist in the exchange of nutrients between the intercellular fluids and the tissues, blood and lymph. A deficiency of protein can upset the body’s fluid balance, causing edema
- Proteins form the structural basis of chromosomes, through which genetic information can be passed onto the offspring from the parent
- The genetic code contained in each cell’s DNA is actually information for how to make that cell’s proteins
HOW IS PROTEIN BROKEN DOWN IN OUR BODY?
- Whenever protein is consumed, the body breaks it down into amino acids - the building blocks of all proteins
- There are non-essential and essential amino acids. The body from other amino acids from other amino acids can synthesize non-essential amino acids
- Essential amino acids, on the other hand, cannot be synthesized by the body, and therefore must be obtained from external sources - our diet
PROTEIN SYNTHESIS
- Whenever the body "synthesizes" a protein - to build muscle for example, it requires a variety of amino acids for the protein making process. These could come from within the body or from our diet. If there is a constant shortage of proteins, the building of protein in the body stops, and the body suffers
WHAT CAN CAUSE AN AMINO ACID DEFICIENCY?
- Dietary protein restrictions - weight control by severe diet restrictions
- Inadequate amino acids in the diet - uninformed vegetarianism
- Insufficient stomach acid - antacid use, digestive impairment
- Any diseases leading to muscle wasting and atrophy
- Stress
- Amino acid nutrition therefore has an obvious relationship to protein nutrition
SYMPTOMS OF AMINO ACID DEFICIENCY
- Failure to thrive
- Autism spectrum disorders
- Rapid weight loss
- Dyspepsia
- Behavior disorders
- Chronic fatigue
- Depression
TYPES OF PROTEINS
- Complete proteins: contain all the amino acids - including essential amino acids. Sources include: meat, fish, poultry, cheese, eggs, and milk
- Incomplete proteins: contain only some of the amino acids, and do not contain all the essential amino acids. Sources include: grains, legumes, and leafy green vegetables
PROTEIN SOURCES
- Although it is necessary to consume the full range, it’s not necessary to get them from meat, fish, poultry and other complete- protein foods
- Mutual supplementation: Enables one to combine partial protein foods to make complementary protein – proteins that supply adequate amounts of all the essential amino acids
Example: To make a high quality meat substitute one could combine beans with:
- Brown rice
- Nuts
- Corn
- Seeds
- Wheat
ARE WE GETTING ENOUGH PROTEIN IN OUR DIETS?
- Americans do get enough protein too much at times, largely as a result of our diet, which is high in meat and dairy products
- On average, one should consume a minimum of 50 grams of protein from different sources
- Nut butters are high is amino acids; combinations of the above list provide a complete protein source as well
- Cornmeal fortified with L-lysine makes a complete protein as well
- Soybean products - such as tofu and homemade soymilk, are complete proteins. They contain the essential amino acids plus several other nutrients
- Soy products: tofu, soy flour, textured vegetable protein, soy cheese are other healthful ways to complement a meatless diet
- Yogurt (fresh and unsweetened) is the only animal derived complete protein source recommended for frequent use in the diet. It contains probiotics that are helpful in maintaining a healthy digestive tract and keeping pathogens such as yeast at bay. Also yogurt is high in Vitamin A, D and B- vitamins
TYPES OF COMMERCIAL PROTEINS AVAILABLE
- WHEY AND WHEY ISOLATES
- SOY BASED PROTEINS
- EGG BASED PROTEINS
- RICE PROTEINS
- VEGETARIAN PROTEINS SUCH AS PEAS, LENTIL, HEMP AMONG OTHERS
- AMINO ACID FORMULAS
WHICH PROTEIN SUPPLEMENT SHOULD YOU BUY AND WHAT SHOULD YOU WATCH OUT FOR?
- If you are considering purchasing a protein supplement, the first step is to find out what type of supplementation would work well for you. Ask yourself - What is your purpose for additional protein supplementation, as excessive amounts of proteins can effect or even damage kidney function! It is important to find out the NNU value of the protein is - that is the net nitrogen utilization value of the protein: that is the nutritional value of the dietary protein or amino acid formula
- The higher the NNU value, the better it is absorbed and utilized in the body
If you are suspecting that you are not getting enough protein in your diet, and would like to get an assessment of your diet and naturopathic recommendations for protein and nutrient supplementation for optimal health and wellbeing, please call us at 416 913 4325 (HEAL) to schedule your initial naturopathic consultation or email us at [email protected]. We also offer specialised diagnostic testing to see if you are lacking in specific amino acids.
Please ask your doctor or naturopath before starting on any supplements or diets. Its is better to first identify the cause and then treat it with the right remedies, even though those mentioned above have minimal side effects.
* DISCLAIMER: The information on this article is the property of Dr. Sushma Shah, Naturopathic Doctor, and is not intended to treat, diagnose or cure any diseases or promote any services or products mentioned on the website.