What Are Omega-3 Fatty Acids? Explained in Human Terms Hot

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Omega-3 fatty acids are very important fats that we must get from the diet.

However, most people don’t really know what they are.

This article explains what omega-3 fatty acids are, how they work and why you should care.

What is Omega-3?

Omega-3 is short for omega-3 fatty acid.

This is a family of essential fatty acids that play important roles in the human body (1).

We can not produce them on our own, so we must get them from the diet.

Omega-3 fatty acids are polyunsaturated, meaning that they have several double bonds in the chemical structure.

The three most important types are ALA (alpha-linolenic acid), DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid).

ALA is mainly found in plants, while DHA and EPA are mainly found in animal foods and algae.

Omega-3 fatty acids are needed for optimal function of the human body, and they may also provide numerous powerful health benefits (2).

Common foods that are high in omega-3 fatty acids include fatty fish, fish oils, flax seeds, chia seeds, flaxseed oil and walnuts, to name a few.

For people who do not eat much of these foods, an omega-3 supplement (like fish oil) is often recommended.

Bottom Line: Omega-3 fatty acids are a family of important fats that we must get from the diet. The three main types are ALA, EPA and DHA.

What Does “Omega-3” Mean?

The “omega” naming convention has to do with the placement of the double bonds on the fatty acid chain.

Each fatty acid has a long chain of carbon atoms, with one carboxylic acid end (called alpha) and one methyl end (called omega).

Here is a photo with two fatty acids. The alpha end is on the left and the omega end on the right. The double lines shows the placement of the double bonds.

Omega 3 Fatty Acid StructurePhoto Source: GB HealthWatch.

The omega-3 fat ALA is on the top and the omega-6 fat LA on the bottom.

The number 3 means that the first double bond of the fatty acid molecule is located 3 carbon atoms away from the “omega” end.

Conversely, the double bond in omega-6 fatty acids is located 6 carbon atoms away from the omega end.

Bottom Line: The “omega” naming convention has to do with the placement of the double bond in the fatty acid molecule. Omega-3 fatty acids have the first double bond placed 3 carbon atoms away from the omega end.

The Three Types: ALA, EPA and DHA

Man Holding a Whole Fish

There are three main types of omega-3 fatty acids: ALA, DHA and EPA.

ALA (alpha-linolenic acid)

Alpha-linolenic acid (ALA) is the most common omega-3 fatty acid in the diet. It is 18 carbons long (3).

It is not active in the human body, and needs to be converted into the active forms, EPA and DHA.

However, this conversion process is inefficient. Only a small percentage of ALA is converted into the active forms (456).

ALA is found in flaxseeds, flaxseed oil, canola oil, chia seedswalnutshemp seeds and soybeans, to name a few.

EPA (eicosapentaenoic acid)

Eicosapentaenoic acid is an omega-3 fatty acid that is 20 carbons long.

It is mostly found in animal products, such as fatty fish and fish oil. However, some microalgae also contain EPA.

It has several functions in the human body. Part of it can be converted into DHA.

DHA (docosahexaenoic acid)

Docosahexaenoic acid (DHA) is the most important omega-3 fatty acid in the human body. It is 22 carbons long.

It is a key structural component of the brain, the retina of the eyes and numerous important parts of the body (7).

Like EPA, it is mostly found in animal products like fatty fish and fish oil. Meat, eggs and dairy products from grass-fed animals also tend to contain significant amounts.

Vegetarians and vegans are often lacking in DHA, and should take microalgae supplements, which contain DHA (89).

Bottom Line: There are three main omega-3 fatty acids in the diet: ALA (alpha-linolenic acid), EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid).


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The Omega-6:Omega-3 Ratio

Omega-6 fatty acids also have important roles in the human body.

Their function is often similar to the function of omega-3 fatty acids.

Both are used to produce signalling molecules called eicosanoids, which have various roles related to inflammation, blood clotting and others (10).

Omega-3 fatty acids are anti-inflammatory, but eating too much omega-6 counteracts these beneficial effects.

For this reason, we need to consume these fatty acids in a certain balance for optimal health. This balance between omega-6 and omega-3 is often termed the omega-6:omega-3 ratio.

These days, most people are eating way too many omega-6 fats, and way too few omega-3s, so the ratio is currently skewed far towards the omega-6 side (11).

Bottom Line: Omega-3 and omega-6 fatty acids are used to produce important signalling molecules called eicosanoids. Getting both types of fatty acids in a certain balance is considered important for optimal health.

What Omega-3 Fatty Acids Do

Fish

Omega-3 fatty acids, particularly DHA, play structural roles in the brain and retina of the eyes (7).

It is particularly important for pregnant women and breastfeeding mothers to get enough DHA.

It can affect the future health and intelligence of the baby (12).

Additionally, getting enough omega-3 fatty acids can have powerful health benefits for adults as well. This is especially true of the longer-chain forms, EPA and DHA.

Although evidence is mixed, studies have shown that omega-3 fatty acids can have protective effects against all sorts of diseases.

This includes breast cancer, depression, ADHD, as well as various inflammatory diseases (13141516).

At the end of the day, omega-3 fatty acids are important, and the modern diet is severely lacking in them.

If you don’t like fish, then consider taking a supplement. It is both cheap and effective.

 

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By J. Davis III

Category: HEALTH
Tags: HEALING | HEALTHY FATS | REMEDIES

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Category: HEALTH
Tags: HEALING | REMEDIES | PREVENTION

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#1 muscle that eliminates joint and back pain, anxiety and looking fat

By J. Davis III

Category: HEALTH
Tags: HEALING | PREVENTION

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More Health Resources:
  1. "Red" Smoothie Helps Alabama Girl Shed 80lbs!
  2. Thе Fastest Wау Tо Lose Weight In 4 Weeks
  3. #1 muscle that eliminates joint and back pain, anxiety and looking fat
  4. Your Birth Date + Name - Free Report
  5. The "Instant Switch" Law Of Attraction
  6. The 3 reasons you should NEVER eat wheat -- Yes, even "whole wheat"
  7. [PROOF] Reverse Diabetes with a “Pancreas Jumpstart”
  8. Why Some People LOOK Fat that Aren't
  9. Diabetes Destroyer System
  10. His wife REFUSED to let them amputate his legs!
  11. Unlock Your Hip Flexors
  12. Doctors Reversed Diabetes in Three Weeks

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