Health and Fitness

7 Nutrition Examples

Not only do humans need to nourish themselves, animals and plants do too. On this occasion, we want to give you 7 examples of nutrition that you may not have known about.

First, know what nutrition is: it is the procedure where the body takes advantage of the nutrients in food, so that your cells and body can have energy and live.

In the same way, food is responsible for providing us with raw materials for the growth and repair of our body.

There is no single way to extract the raw material that needs to be built from food, it is a complex procedure that changed over time.

These procedures can vary, and therefore, can be classified in different ways in 7 nutrition examples that we will explain below.

7 Examples of nutrition in living beings

1. Autotrophic

It refers to feeding on oneself, synthesizing organic substances. That is, it is the type of nutrition used by those living beings that can produce their own food.

One of the clear examples of autotrophic nutrition is plants, because they feed thanks to photosynthesis . Living things that carry out photosynthesis are called photolithoautotrophs.

In contrast, those that use elements of a chemical nature are chemolithotrophs. Example: bacteria.

2. Enteral

In addition to the natural way (orally), there are other ways of ingesting food, especially in the cases of patients with special dietary or nutritional needs: enteral.

Enteral nutrition consists of placing food directly into the digestive tract. For example, it is carried out in people who suffer from liver or kidney failure.

3. Heterotrophic

This variant of nutrition is used by living beings that require an already prepared food source, such as animals fungi and most microorganisms.

4. Holozoic

This nutrition is typical of human beings, where an organism consumes solid food and then digests it to absorb the nutrients it needs.

It is divided into 3 ways:

  • Carnivore: the body feeds on meat. For example: the lion that devours its prey.
  • Herbivorous: the diet is based on herbs, grasses, plants and vegetables. Example: the horse, the zebra.
  • Omnivorous: consumption is given by meat and vegetables. Example: chickens.

5. Mixotrophic

Depending on the environmental conditions, mixotrophic organisms can adopt autotrophic or heterotrophic nutrition.

That is, according to their needs: they obtain energy from light or chemical reactions, and the carbon supply can be organic or inorganic in nature.

Mixotrophs are living beings excellently adapted to the environment, and it is believed that half of the plankton (microorganisms that inhabit surface waters) are mixotrophs.

Another of our examples of the nutrition of living beings are carnivorous plants, which obtain carbon and energy from living beings (generally insects) that they capture and consume.

They do this despite the fact that their main mode of nutrition is the autotroph.

6. Parasite

In this variant, the living being coexists on or within another organism that it harms and from which it obtains its nutrients, either by absorption or by ingestion.

Among our examples of parasitic nutrition are ticks, worms, and lice, which feed on other living things without killing them.

7. Symbiotic

We will begin by clarifying what symbionts are: they are organisms that feed on another in a close or non-harmful bond, for the second.


Corals have symbiotic links with algae. For their part, lichens are symbiotic organisms made up of fungi and plants.

At some level, all living things are symbiotes. The most palpable example is given by some bacteria in the human digestive system.

They are essential for the immune response to certain pathogens or the synthesis of nutrients.

Importance of nutrition

Correct nutrition is related to a healthy lifestyle, thus helping to avoid many chronic diseases.

Therefore, many health difficulties can be prevented with a healthy diet that follows and respects the indicated portions of each food.

For humans, food intake is a vital requirement for their body. If you do it in a balanced way, you will be in good general health.

In this way, you can protect yourself from physical and mental deterioration. We recommend you consult with a dietitian or nutritionist, who is the professional specialized in human nutrition.

His responsibility is to plan meals, develop menus, and manage people’s food and nutrition plans.

Other nutrition facts

  • The body needs 6 types of nutrients daily: water, carbohydrates, fats, minerals, proteins and vitamins .
  • It is responsible for providing the necessary energy so that we can live, and perform our functions as living beings .

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