What is nutrition, and why is it so important ?

Nutrition is the study of nutrition in the diet, how the body uses it, and the relationship between diet, health, and disease.

Nutritionists use ideas from molecular biology, biochemistry, and genetics to understand how genes affect the human body.


Nutrition also focuses on how people can use food choices to reduce their risk of disease, what happens when a person has too much or too little nutrients, and how allergies work.


Nutrients provide nutrients. Protein, carbohydrates, fats, vitamins, minerals, fiber, and water are all nutrients. When people do not have the proper nutrient balance in their diet, their risk of certain health conditions increases.


This article will explain how the various nutrients are needed and why.


 The role of nutritionist and nutritionist will also be considered.




Macronutrients are nutrients that humans need in relatively large quantities.




Sugar, starch, and fiber are the main types of carbohydrates.

Sugar is a simple carbohydrate. The body breaks down quickly and absorbs sugar and processed starch. They can provide instant energy, but they do not leave a person feeling full. They can also cause an increase in blood sugar levels. High blood sugar levels increase the risk of type 2 diabetes and its complications.


Fiber is also a carbohydrate. The body breaks down other types of fiber and uses them for energy; some are digested by intestinal bacteria, while others are passed through the body.


Fiber and raw starch are complex carbohydrates. It takes the body some time to break down and absorb complex carbohydrates. After eating fiber, a person will feel full for a long time. Fiber can also reduce the risk of diabetes, cardiovascular disease, and colorectal cancer. Complex carbohydrates are a much healthier choice than sugar and refined carbohydrates.





Proteins contain amino acids, which are naturally occurring organisms.

There are 20 amino acids. Some of these are important, which means people need to get them from food. The body can do some.


Some foods provide complete protein, which means they contain all the amino acids needed by the body. Some foods contain a variety of amino acids.


Most plant-based foods do not contain enough protein, so a person who follows a vegan diet needs to eat a variety of foods throughout the day that provide essential amino acids.





Essential oils in:


  • anointing members
  • helps the organs to produce hormones
  • which enables the body to absorb certain vitamins
  • reduce inflammation
  • to maintain brain health



Too much fat can cause obesity, high cholesterol, liver disease, and other health problems.

However, the type of fat a person consumes makes a difference. Unsaturated fats, such as olive oil, are much healthier than saturated fats, which are often found in animals.





An adult body can have up to 60% water, and needs water for many processes. Water has no calories, and it does not provide energy.

Many people recommend drinking 2 liters, or 8 glasses, of water a day, but it can also be found in foods, such as fruits and vegetables. Adequate infiltration of water will result in pale yellow urine.

Requirements will also depend on a person's body size and age, environmental factors, activity levels, health status, and so on.




Micronutrients are important in small amounts. They contain vitamins and minerals. Manufacturers sometimes add this to the diet. Examples include fortified cereals and rice.




  • The body needs carbon, hydrogen, oxygen and nitrogen.
  • Food minerals, such as iron, potassium, and others are needed.
  • In many cases, a balanced and balanced diet will provide you with the minerals you need. In case of deficiency, the doctor may recommend supplements.

Here are some of the minerals your body needs to function properly.




Potassium is an electrolyte component. It activates the kidneys, heart, muscles, and nerves. The 2015–2020 Dietary Guidelines for Americans recommend that adults consume 4,700 milligrams (mg) of potassium each day.


  • Too little can cause high blood pressure, stroke, and kidney stones.
  • Too much can be dangerous for people with kidney disease.
  • Avocados, coconut water, bananas, dried fruit, beans, beans and lentils are good sources.





Sodium is an electrolyte that helps:


  • maintain nerve and muscle function
  • regulate body fluid levels
  • Too little can lead to hyponatremia. Symptoms include fatigue, confusion, and fatigue.


  • Overeating can lead to high blood pressure, which increases the risk of cardiovascular disease and stroke.


  • Table salt, made up of sodium and chloride, is a popular beverage. However, most people eat a lot of sodium, as it already happens naturally in most foods.


  • Experts urge people not to add table salt to their diet. Current guidelines recommend that you do not consume more than 2,300 mg of sodium per day, or close to one teaspoon.


This recommendation includes both natural sources, as well as salt that a person adds to his diet. People with high blood pressure or kidney disease should eat less.





The body needs calcium to build bones and teeth. It also supports the nervous system, cardiovascular health, and other functions.

Too little can cause weak bones and teeth. Symptoms of severe deficiency include ringworm and changes in heart rate, which can be dangerous to health. Excess can lead to constipation, kidney stones, and decreased absorption of other minerals.

Current adult guidelines recommend taking 1,000 mg per day, as well as 1,200 mg for women aged 51 and over. Good sources include dairy products, tofu, legumes, and raw, leafy vegetables.





Phosphorus is present in all body cells and affects the health of bones and teeth.

Too little phosphorus can lead to bone disease, affect appetite, muscle strength, and coordination. It can also cause anemia, increased risk of infection, burning or stinging sensations in the skin, and confusion.

Eating too much is unlikely to cause health problems even though toxins can be caused by dietary supplements, medications, and phosphorus metabolism problems. Adults should aim to consume approximately 700 mg of phosphorus per day. Good sources include dairy products, salmon, lentils, and cashews.




Zinc plays a role in the health of immune cells, immune systems, wound healing, and protein synthesis. Too little can lead to hair loss, skin lesions, changes in taste or smell, and diarrhea, but this is rare.

Older women need 8 mg of zinc per day, while older men need 11 mg. Food sources include oysters, beef, fortified cereals, and baked beans. To find out more about zinc food sources.




Iron is essential for the formation of red blood cells, which carry oxygen throughout the body. It also plays a role in building connective tissue and creating hormones.


  • Too little can lead to anemia, which includes digestive problems, weakness, and difficulty thinking.
  • Overeating can lead to digestive problems, and very high levels can be fatal.
  • Good sources include solid grains, beef liver, dill, spinach, and tofu. Adults need 8 mg of iron per day, but women need 18 mg during their reproductive years.




  • The body uses manganese to produce energy, plays a role in blood clotting, and supports the immune system.
  • Too little can cause weak bones in children, skin rash in men, and mood swings in women.
  • Excess can lead to convulsions, muscle spasms, and other symptoms, but only in very high doses.
  • Mussels, hazelnuts, brown rice, peas, and spinach all provide manganese. Adult males need 2.3 mg of manganese each day, while females need 1.8 mg.





Copper helps the body make energy and produces connective tissue.

Too little copper can lead to fatigue, light skin, high cholesterol, and connective tissue disorders. This is rare.

Too much copper can cause liver damage, abdominal pain, nausea, and diarrhea. Too much copper reduces zinc absorption.

Good sources include beef liver, oysters, potatoes, mushrooms, sesame seeds, and sunflower seeds. Adults need 900 micrograms (mcg) per day.




Selenium is made up of more than 24 selenoproteins, and plays a key role in reproductive and thyroid health. As an antioxidant, it can also prevent cell damage.


Too much selenium can cause garlic allergies, diarrhea, irritability, skin rashes, broken hair or nails, and other symptoms.

Too little can cause heart disease, infertility, and arthritis.


Adults need 55 mcg of selenium per day.


Brazil nuts are an excellent source of selenium. Other vegetable sources include spinach, oatmeal, and baked beans. Tuna, ham, and rich macaroni are all excellent sources.