What Is Omega 3 and Why You Should Never Use It for Cooking: ALA vs EPA vs DHA, Fish Oil vs Flaxseed Oil and a Homemade Omega 3 Oil Recipe
If you are using omega 3 oil for cooking, you are making a big mistake. A lot of people get influenced by social media and start taking omega 3 oils even when they do not need them, and worse, they cook with them. In this blog we will do a proper scientific analysis of omega 3. What it is, what purpose it serves in the body, who actually benefits from it, who can be harmed by taking too much, and who really needs omega 3 capsules. We will also show you how to make an excellent omega 3 oil at home.
You have probably seen reels telling you to use a certain cooking oil because it has a great ratio of omega 3 vs omega 6. But the omega 3 and omega 6 concept is not meant for cooking oil at all. Let us understand why, step by step.
The Basics: Cooking Oil vs Nutrition Oil Are Two Different Things
Edible oils serve two completely different purposes, and this is the foundation of everything. The first purpose is cooking, and the second is nutrition. When we use oil for cooking, its main role is heat transfer. And when an oil transfers heat, its heat stability becomes the most important factor. If the oil oxidizes and gets damaged the moment it is heated, then eating that food is not good for health. So heat stability is the critical parameter for a cooking oil.
Nutrition oils are different. These are cold pressed oils that still contain their vitamins, minerals, enzymes and antioxidants. They are nutritionally beneficial. Oils high in saturated and monounsaturated fatty acids have good heat stability and are best for cooking. Oils high in polyunsaturated fatty acids, which have many double bonds, are nutritionally rich but have poor heat stability, so they should not be used for cooking.
| Purpose | Best Fatty Acid Type | Heat Stability | Examples |
|---|---|---|---|
| Cooking (heat transfer) | Saturated + MUFA | High — stays stable under heat | Ghee, coconut oil, palm oil, groundnut oil |
| Nutrition (eaten raw) | Polyunsaturated (PUFA) | Low — oxidizes with heat | Cold pressed flaxseed, walnut, olive oil |
Where Does the Omega Concept Come From? Understanding Fatty Acid Structure
So where did this omega concept even come from? To understand it, we look at the structure of a fatty acid. Every fatty acid has an acid group, called COOH, at one end. Then there is a long chain of carbon atoms. The first carbon next to the acid group is called alpha, the second is beta, then gamma, delta and so on. So the acid end is called the alpha end.
The other end of the chain, where you see a CH3 group, is called the omega end. Now here is the clever part. If you count from the omega end, and there is a double bond between the 3rd and 4th carbon, we call it an omega 3 fatty acid. If the double bond is between the 6th and 7th carbon, it is omega 6. And if it is between the 9th and 10th carbon, it is omega 9. So the omega number simply tells you where the first double bond sits when you count from the omega end.
| Omega Type | Double Bond Position | What It Does |
|---|---|---|
| Omega-3 | Between 3rd and 4th carbon | Anti-inflammatory, brain and heart health, flexible cells |
| Omega-6 | Between 6th and 7th carbon | Needed in balance, excess promotes inflammation |
| Omega-9 | Between 9th and 10th carbon | Body can make this itself, not essential |
Why Are Omega 3 and Omega 6 Called Essential Fatty Acids?
When any fat enters your body, it goes through a process called beta oxidation, where the carbon chain breaks into two-carbon pieces. These get absorbed and sent to the liver. The liver then rebuilds fatty acids of whatever length the body needs, 5 carbons, 10 carbons, 20 carbons, according to requirement. So your body can build most fatty acids on its own.
But scientists discovered that the body does not have the system to place a double bond at the omega 3 or omega 6 position. It can build the carbon chain, but it cannot create that specific double bond near the omega end. This means omega 3 and omega 6 must come from outside, from food. That is why they are called essential fatty acids. Essential means your body cannot make them and you must get them from your diet.
Now why could the body not just ignore these? Why did they matter so much that a whole category was created? The answer lies in the cell membrane.
Why Omega 3 Matters: The Cell Membrane Story
Every cell in the human body has an outer cover called the cell membrane, and this membrane is made of fatty acids. The type of fatty acid in the membrane decides how flexible or rigid the cell is.
Saturated fatty acids have a straight chain, like an iron rod. They do not bend. Monounsaturated fatty acids have one double bond, so they can bend at one point. Polyunsaturated fatty acids, which include omega 3, have many double bonds, so they can bend at many points and are very flexible.
If a cell needs to be rigid and strong, like the cells in our bones, the membrane uses more saturated fatty acids so the structure stays firm and upright. But some cells need to be extremely flexible. Brain cells, nerve cells, eye retina cells and heart cells all need to bend, flex and move constantly. These cells need omega 3 in their membranes to stay flexible. This is why omega 3 is so important for brain development, memory, vision and heart function. Without it, these cells cannot work properly.
The Three Types of Omega 3: ALA, EPA and DHA
Omega 3 fatty acids come in three types, and understanding the difference between ALA EPA DHA is the key to knowing what to take.
| Type | Full Name | Carbon Chain | Main Source | Body Can Make It? |
|---|---|---|---|---|
| ALA | Alpha-linolenic acid | 18 carbons | Flaxseed, walnut, mustard oil | Must come from diet |
| EPA | Eicosapentaenoic acid | 20 carbons | Fish oil | Body makes some from ALA |
| DHA | Docosahexaenoic acid | 22 carbons | Fish oil | Body makes some from ALA |
This is why for most people, a good plant source of ALA like flaxseed oil is enough. Your body handles the rest by converting some of it into EPA and DHA as needed.
Fish Oil vs Flaxseed Oil: Which Omega 3 Source Is Better?
The fish oil vs flaxseed oil question comes down to what your body needs. Flaxseed oil gives you ALA, which your body can convert into EPA and DHA for daily needs. Fish oil gives you ready-made EPA and DHA directly, without any conversion needed.
For a vegetarian or for most healthy people, flaxseed oil benefits are enough because the body will make the EPA and DHA it needs from the ALA. Flaxseed is the single richest plant source of omega 3, with almost 40 to 50 percent ALA content. This makes flaxseed oil the best omega 3 for vegetarians.
So why not just mix fish oil into our nutrition oil if it has ready EPA and DHA? The problem is the smell. Fish oil has a very strong smell. If you mixed it into your salad oil, you could not eat the salad or drink the oil because the smell would be overwhelming. This is exactly why EPA and DHA are sold as soft gel capsules, so you can take them without tasting or smelling the fish oil.
How to Make a Powerful Omega 3 Oil at Home
You can make an excellent omega 3 rich nutrition oil at home. Every component must be cold pressed, and you store the final mix in the refrigerator so it does not oxidize. Here is the composition:
| Oil (all cold pressed) | Percentage | Why It Is Added |
|---|---|---|
| Extra virgin olive oil | 40% | Base oil, stable MUFA, antioxidants |
| Flaxseed oil | 25% | Highest ALA omega-3 source (40 to 50%) |
| Mustard oil | 20% | Good omega-3 and omega-6 balance |
| Walnut oil | 10% | Omega-3 plus antioxidants for the brain |
| Sesame (til) oil | 5% | Sesamin antioxidant prevents oxidation |
How to Use This Omega 3 Oil
You need only about 1 to 2 ml of omega 3 per day, so one teaspoon of this oil gives you a good amount. You can take it in three ways: drink one teaspoon directly, use it as a salad dressing, or drizzle it over your roti instead of ghee. The choice is yours. Just remember, never heat this oil. It is for nutrition, not for cooking.
Can You Take Too Much Omega 3?
Yes, more is not always better with omega 3. If you take far more polyunsaturated fatty acids than your body needs, they oxidize easily, and this oxidation itself can start causing inflammation in the body. So excess omega 3 is not good either. Your body needs an optimum amount, not an unlimited amount. Around 1 to 2 ml per day is enough for most people, which one teaspoon of the homemade oil easily provides.
Who Actually Needs Omega 3 Capsules?
This is important because omega 3 capsules are not for everyone. If you are taking flaxseed oil or the homemade omega 3 oil, your body will make enough EPA and DHA for daily needs on its own. So most people do not need capsules at all.
The people who genuinely need extra EPA and DHA from capsules are those whose blood reports show high triglyceride levels. For them, the ready-made EPA and DHA in fish oil capsules can help reduce triglycerides and cholesterol further.
But here is the honest truth. Suppose a diabetic patient has high weight, high blood glucose and high triglycerides, and a doctor suggests omega 3 capsules. Will just taking the capsule fix everything? No, it will not. Taking an omega 3 capsule alone, while the rest of the diet stays bad, gives very limited success.
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Watch the detailed video explanation of omega 3, ALA vs EPA vs DHA, and homemade omega 3 oil recipe
Frequently Asked Questions
No, you should never use omega 3 oil for cooking. Omega 3 is a polyunsaturated fatty acid with many double bonds, which makes it oxidize very quickly when heated. When you cook with omega 3 rich oils like flaxseed oil, the heat destroys the beneficial fatty acids and creates harmful oxidized compounds and free radicals. Omega 3 oils are nutrition oils, not cooking oils. They should be consumed raw, as a spoonful daily, a salad dressing, or drizzled over food after cooking. For actual cooking, use heat stable fats like ghee, coconut oil or groundnut oil that have high saturated and monounsaturated fat content.
ALA, EPA and DHA are the three types of omega 3 fatty acids. ALA, or alpha-linolenic acid, has an 18 carbon chain and comes from plant sources like flaxseed, walnut and mustard oil. EPA, or eicosapentaenoic acid, has 20 carbons, and DHA, or docosahexaenoic acid, has 22 carbons, both found mainly in fish oil. The key point is that your body can convert ALA into EPA and DHA by adding carbon atoms, since the body can build chain length but cannot create the omega 3 double bond itself. This is why ALA is the truly essential one to get from diet, while your body can make some EPA and DHA from it.
For most healthy people and vegetarians, flaxseed oil is a good omega 3 source because it is the richest plant source of ALA, containing 40 to 50 percent ALA, and the body converts this ALA into EPA and DHA as needed for daily requirements. Fish oil provides ready-made EPA and DHA directly, without needing any conversion. The main practical advantage of fish oil is for people who specifically need higher levels of EPA and DHA, such as those with high triglycerides. For general daily omega 3 needs, flaxseed oil works well, and it is the best option for vegetarians who do not consume fish products.
Omega 3 capsules are not necessary for everyone. Most people who consume flaxseed oil or a good omega 3 rich oil get enough because the body makes the EPA and DHA it needs from ALA. The people who genuinely benefit from fish oil capsules containing EPA and DHA are those with elevated triglyceride levels shown in their blood reports. For these individuals, the ready-made EPA and DHA can help reduce triglycerides and cholesterol. However, taking a capsule alone will not fix high triglycerides if the overall diet remains poor. The capsule works best as a supplement after reducing the diet's glucose load and improving the overall metabolic environment.
Most people need only about 1 to 2 ml of omega 3 per day, which is easily provided by one teaspoon of a good omega 3 rich oil like flaxseed oil or a homemade omega 3 oil blend. More is not better. Taking excessive amounts of polyunsaturated omega 3 fatty acids can actually cause harm, because these fats oxidize easily and excess oxidation can trigger inflammation in the body. The goal is an optimum amount, not an unlimited amount. A single teaspoon of the right oil daily, consumed raw, meets the needs of most healthy people.
You can make a powerful omega 3 oil at home by mixing five cold pressed oils: 40 percent extra virgin olive oil as the base, 25 percent flaxseed oil for the highest ALA content, 20 percent mustard oil for balanced omega 3 and omega 6, 10 percent walnut oil for additional omega 3 and antioxidants, and 5 percent sesame oil whose sesamin antioxidant slows oxidation of the blend. All oils must be cold pressed. Store the mixture in the refrigerator to prevent oxidation and extend shelf life. Take one teaspoon daily, either raw, as salad dressing, or drizzled over roti. Never heat this oil, as it is for nutrition only, not cooking.
Omega 3 is important because it is a key building block of cell membranes, especially in cells that need to be flexible. Brain cells, nerve cells, eye retina cells and heart cells all need to bend and move constantly, and omega 3 fatty acids in their membranes provide this flexibility. This is why omega 3 supports brain development, memory, vision and heart function. Omega 3 is also anti-inflammatory, which is beneficial for overall health. Because the human body cannot produce omega 3 on its own, it is classified as an essential fatty acid that must come from the diet through sources like flaxseed, walnut, mustard oil and fish.
Use it raw. Store it cold. Keep it simple.
