What are proteins and what do they do?

Health Insurance Plans starting at Rs.15/day*

Health Insurance Plans starting at Rs.15/day*

What is protein?

Protein is a combination of large and complex molecules that play an important role in the functioning of the body.

Protein is an indispensable macronutrient found in almost every organ, tissue and essential body part like bone, muscle, skin and hair. Foods like fish, eggs, meat and legumes contain a high source of proteins in nature.

Protein contributes to the production of haemoglobin, which transports oxygen in the blood. Protein is built-up of twenty-plus chemical components called Amino acids.

Amino acids, which are building blocks of chemicals, are essentially used to build proteins. Amino acids play a significant role in developing muscle and bone density.  

In general, our body fundamentally needs protein to help the body create new and repair damaged cells. Children, teenagers and pregnant women need protein for healthy growth and body development.

Importance of protein

Protein is the crux of the human body. Protein is considered to be necessary for the production of hormones, neurotransmitters, tendons and muscles. Besides, it is tough for humans to survive without all nine essential amino acids.  

Without the contribution of proteins, bones, tissues and muscles would not be strong as it is now.  

In addition, protein contributes to cellular repair, immunological response, metabolic processes, formation of blood cells and many more.  

Here’s a list that enumerates why protein is essential for the human body.

  • Helpful for biochemical reactions
  • Acts as a chemical messenger between cells
  • Growth and maintenance of the body
  • Helps to maintain proper pH
  • Transports nutrients to the body

Types of protein

The following are the types of protein and their crucial significance.

Contractile proteins  

Contractile proteins are vital for building contractile muscles that are typically found in cells and tissues. These proteins are involved in the participation of contractile events in the cytoplasm, cell aggregation and motile activity.  

Hormonal proteins

Hormonal proteins are chemical messengers that help your cells, tissues and organs to communicate with one another. Hormonal protein examples include insulin, glucagon, pituitary hormones and hypothalamic hormones.  

Structural proteins

A group of proteins known as structural proteins perform various tasks, from regulating cell shape and mobility to supporting important structures, including bones, cartilage, hair and muscles. Structural proteins consist of keratin, actin, myosin and collagen.

Storage proteins

Storage proteins consist of both vegetative and reproductive tissues and act as a storehouse for usage in a plant’s developmental phases. Thus, the buildup of storage protein is advantageous for plant survival.  

Transport proteins

Transport proteins help to move materials across cellular membranes. Transport proteins act as a channel to allow their substrate to move from one side to the other. It also helps to carry molecules across the plasma membrane.

How much protein do you need a day?  

You must consume enough protein each day to meet your body’s demands. Your body uses protein to create and repair tissues, transfer nutrients and perform several other crucial tasks.

The amount of protein required for an individual depends on many factors like body capacity, body limit and certain lifestyle circumstances.

It is advised that a person should get at least 10 to 35 per cent of calories from protein every day. Therefore, on average, if you require 2,000 calories, 200 to 350 grams of calories should come from protein.

Muscle and Strength

Protein is crucial for muscle growth because amino acids support the maintenance of muscle tissue and repair them in case of any damage. Protein aids your post-workout recovery because muscles are slightly torn during the workout.

Protein supplementation may improve muscular hypertrophy and enhance muscle strength in untrained and trained individuals. Protein can aid athletes in recovering from strenuous exercise and increasing muscle strength.

Protein in pregnancy  

During pregnancy, protein serves as the building block for the baby’s cells and aids in developing skin, muscles, hair and nails. Depending on your weight and physical activity, you need anywhere between 60 and 100 grams of protein per day for the healthy growth of the fetus.

Proteins aid in the development of a baby’s brain along with the tissues and organs. It also helps the mother develop healthy breast and uterine tissue.

A pregnant woman can take a wide variety of protein-rich foods such as meat, chicken, fish, eggs, milk, cheese, tofu and beans. During pregnancy, consult your healthcare professionals before consuming protein drinks and powders.

Benefits of high protein diets

The following are some of the benefits of consuming high-protein diets.

  • Mitigates level of hunger  
  • Strength and muscle gain  
  • Enhances metabolism and increases fat burning
  • Reduces cravings and desire for snacking
  • Reduces blood pressure
  • Aids in weight maintenance  
  • It helps to maintain fitness as you age

What to eat for a high protein diet?

Protein Foods

You can take the following foods for a high-protein diet.

  • Eggs
  • Leaner cuts of beef
  • Chicken breasts
  • Turkey breasts
  • Shrimp
  • Nuts and seeds
  • Fish and haddock

How do high-protein diets affect you?  

Red meat and full-fat dairy products are two examples of foods in some high-protein diets that may raise your risk of developing heart disease.

People with kidney illness should refrain from consuming a high protein diet because their bodies may have problems excreting all the waste products from protein metabolism.

Pregnant women and elderly people should refrain from taking high protein unless advised by a doctor.

In addition, here is a list of problems that can be caused due to a high protein diet.

Risks of eating too much protein  

Anything consumed in excess is harmful to one’s health, and that includes proteins as well. The body cannot utilise extra protein effectively, which places a metabolic burden on the liver, kidneys and bones.  

Furthermore, consuming a lot of meat and excessive amounts of protein may increase your risk of developing cancer, coronary heart problems and other diseases.

Overconsumption of protein causes the following problems, especially for people with compromised organ function.

Summing up

Protein is necessary for life since it contains the essential amino acids for cell and tissue growth. Depending on the body and condition of an individual, protein intake varies, and a human body needs different amounts of protein to satisfy daily needs of the body.

You need to choose protein-rich foods since they supply amino acids and help us maintain a balanced and sustainable diet.


What foods are protein foods?

Protein foods are classified into plant-based foods and animal-based foods. Plants-based protein-rich foods are fruits, vegetables, grains and nuts. Animal-based high protein foods are meat, poultry, fish and eggs.

What fruit has the most protein?  

There are multiple foods which are high in protein content. Among all, guava is considered to be a high protein-rich fruit.

Is a banana high in protein?  

Bananas are rich in potassium. However, it contains an average of 1.3 grams of protein.

Which vegetable is rich in protein?

Every vegetable has its own protein content. Vegetables with high protein-rich contents are spinach, sweet potatoes, green peas, sweet corn and lima beans.

What is the healthiest protein?  

Protein is always the healthiest source of energy for the body. In general, fish and eggs are considered to be the healthiest and highest protein content foods.

What are the consequences of low protein?  

Lack of protein or low protein causes low muscle production and muscle mass that deters your muscle cells from growing.

What is a good protein breakfast?  

High protein-rich breakfasts are:
1· High protein cereal
2·Smoked salmon
3·Yoghurt pancakes
Peanut bread

How can I increase protein in my body?

You can increase protein in your body by consuming high protein-rich foods and taking a balanced diet with proper doctor suggestions.

Do oats have protein?

Oats are one of the low-cost proteins with a high protein source. It is said that oats have a composition ranging from 10 to 15 per cent of protein.

Do tomatoes have protein?  

Tomatoes do contain protein but at a minimal level. On average, 1 kg of tomatoes contains 90 grams of protein.

Is peanut butter good for you?  

Peanut butter contains more protein than regular butter. Peanut butter is good when added to a healthy diet. The fact is peanut butter does contain 25 grams of protein in every 100 grams.


The Information including but not limited to text, graphics, images and other material contained on this blog are intended for education and awareness only. No material on this blog is intended to be a substitute for professional medical help including diagnosis or treatment. It is always advisable to consult medical professional before relying on the content. Neither the Author nor Star Health and Allied Insurance Co. Ltd accepts any responsibility for any potential risk to any visitor/reader.

Scroll to Top