Omega-3 fatty acids explained for heart, brain and skin

Omega-3 fatty acids are vital, polyunsaturated fats that your body cannot produce on its own. They are essentially the essential building blocks for the health of your cells, your brain, and your cardiovascular system. Therefore, they must be obtained through food or targeted supplementation.

What are omega-3 fatty acids really?

You've probably heard of omega-3 fatty acids before, but what exactly are they? Think of them as a dedicated service team working tirelessly behind the scenes to keep your body in top condition. Instead of complicated chemistry, it boils down to a simple fact: your body needs them, but can't produce them itself.

These special fats are therefore "essential." This means they must come from external sources, much like vitamins. They are fundamental nutrients that play a central role in your health.

The three main players: ALA, EPA and DHA

The "Team Omega-3" consists of three key members, each performing very different tasks in your body. Each of these players has its own strengths and is indispensable for specific processes.

• ALA (alpha-linolenic acid) : This is the plant-based form of omega-3. You can find it in abundance in flaxseeds, chia seeds, and walnuts. ALA primarily serves as an energy source for your body, but it can also be converted—albeit only in small amounts—into the other two important fatty acids.
• EPA (eicosapentaenoic acid) : EPA is a powerful anti-inflammatory. Think of it like your body's firefighter, extinguishing small and large "fires" (i.e., inflammation) before they can cause damage. It plays a crucial role in your cardiovascular system.
• DHA (docosahexaenoic acid) : DHA is the architect of your brain and eyes. It is a critical building block for the structure of brain cells and the retina. Adequate DHA intake is therefore essential for your cognitive performance and vision.

While ALA is found primarily in vegetable oils, EPA and DHA are mainly found in fatty fish such as salmon, mackerel, or herring. The German Nutrition Society recommends a daily intake of at least 250 mg of EPA and DHA – a level that many people in Germany unfortunately do not reach.

The crucial point is that your body can only convert ALA into the directly usable forms EPA and DHA very inefficiently. That's why the direct intake of EPA and DHA through diet or targeted supplements is so important for your health.

Individual needs can vary considerably. Your genetic predisposition, lifestyle, and health goals influence how well your body processes these fats and how much you actually need. For example, the mybody-x Skincare DNA metabolic analysis can reveal whether your skin has a genetically determined increased need for anti-inflammatory nutrients like Omega-3.

How Omega-3 supports your health

Omega-3 fatty acids are far more than just a fleeting health trend. These essential fats are true all-rounders and deeply embedded in your body's core processes. They are involved in almost everything – from the smallest cell to complex organ functions.

Let's take a closer look at what exactly happens in your body. Imagine your cardiovascular system as a vast, finely tuned road network. Omega-3 fatty acids, especially EPA, are the specialized maintenance team here. They ensure that the "roads," meaning your blood vessels, remain smooth and free of blockages and deposits.

This has a direct impact on your blood pressure and blood lipid levels. A good supply of omega-3 fatty acids has been proven to help lower triglyceride levels – these are blood fats that, in excessively high concentrations, increase the risk of cardiovascular disease. At the same time, they promote a healthy cholesterol balance. If you'd like to learn more about why low levels of "good" cholesterol can be a problem, read our article on low HDL cholesterol .

Your brain: A high-performance organ needs the right fuel

Did you know that your brain is made up of almost 60 percent fat ? A crucial part of this is the omega-3 fatty acid DHA. You can think of DHA as the most important building block for the communication centers in your brain, the neurons. Without sufficient DHA, signal transmission simply doesn't function properly.

You notice this directly in everyday life:

• Improved concentration : DHA helps you stay focused and not get distracted so easily.
• Stronger memory : It helps your brain to store and retrieve information.
• Emotional balance : A stable supply of Omega-3 is also repeatedly associated with better mood regulation.

The importance of omega-3 fatty acids for our mental fitness extends well into old age. Studies suggest that an adequate supply of omega-3 fatty acids can help maintain cognitive function and reduce the risk of age-related neurodegenerative diseases.

The silent fight against inflammation

Inflammation is actually a great thing – a natural and important reaction of your immune system. It only becomes problematic when it becomes chronic. Then it can become the root cause of many health problems, from joint pain to skin issues. This is where EPA and DHA come into play as natural antagonists, helping to restore balance to these silent inflammations in the body.

Omega-3 fatty acids act like a dimmer switch for inflammatory responses. They don't simply switch them off, but rather regulate them to a healthy level, so that your body remains in balance.

It is precisely this anti-inflammatory property that makes Omega-3 so valuable for your skin. It strengthens the skin barrier from within, provides moisture, and can offer relief for inflammatory skin conditions such as acne or eczema.

However, not every body is the same. Your genetic predisposition plays a role in how efficiently you metabolize omega-3 fatty acids and utilize them for your skin. The mybody-x Skincare DNA metabolic analysis can show you whether you are genetically predisposed to dry skin, faster collagen breakdown, or an increased tendency towards inflammation. With this knowledge, you can specifically adjust your diet and take your skin health to a whole new level.

Meet your personal Omega-3 needs

Having explored the impressive benefits of omega-3 fatty acids , the crucial question now arises: How much do you personally need? The answer is as individual as you are. There's no one-size-fits-all solution, as your specific requirements depend on many different factors.

Your age, gender, general health, and especially your lifestyle play a key role here. A competitive athlete who regularly pushes their body to its limits naturally has different needs than someone with a sedentary office job. This is because omega-3 fatty acids aid in regeneration and keep inflammatory processes in check after exercise.

Similarly, women have a significantly higher need for these nutrients during pregnancy and breastfeeding. The omega-3 fatty acid DHA, in particular, is absolutely crucial for the development of the unborn child's brain and eyes.

The best natural sources of Omega-3

The best and most natural way to meet your needs is always through a conscious diet. Fortunately, nature has given us a wealth of foods rich in these valuable fats. A basic distinction is made between animal and plant sources.

Animal sources: The champions for EPA & DHA

These provide the directly usable, long-chain omega-3 fatty acids EPA and DHA , which our body can use immediately.

• Fatty fish: Salmon, mackerel, herring, and sardines are the absolute top choices here. A single 150g portion of salmon can cover your needs for several days.
• Other seafood: Shrimp, mussels, or certain types of tuna are also good sources and contribute to the supply.

Plant sources: Valuable ALA

Plant-based foods contain the short-chain omega-3 fatty acid ALA (alpha-linolenic acid) . Your body first has to convert this into the important forms EPA and DHA – a process that is not always very efficient.

• Flaxseeds and flaxseed oil: They are the undisputed stars among plant-based sources. One tablespoon of flaxseed oil a day is already an excellent starting point.
• Chia seeds: These little powerhouses are not only full of fiber, but also packed with ALA.
• Walnuts: A handful of walnuts is the perfect snack and provides a good portion of Omega-3.
• Rapeseed oil & hemp oil: These oils are also good sources of ALA for everyday cooking.

To give you a better overview, the following table shows which foods are particularly rich in the different omega-3 fatty acids.

An overview of the best natural sources of Omega-3
Groceries	Type of Omega-3 fatty acid	Average content (per 100g)
Fatty salmon	EPA & DHA	approx. 2,200 mg
mackerel	EPA & DHA	approx. 2,500 mg
herring	EPA & DHA	approx. 1,700 mg
Sardines (in oil)	EPA & DHA	approx. 1,500 mg
Chia seeds	ALA	approximately 18,000 mg
Ground flaxseed	ALA	approx. 22,000 mg
Walnuts	ALA	approx. 9,000 mg
Linseed oil	ALA	approx. 53,000 mg

These figures illustrate that while plant-based sources like flaxseeds or chia seeds contain impressive amounts of omega-3 fatty acids on paper, these are primarily in the form of ALA. Since our bodies can only convert these to a limited extent, animal sources remain the most direct and efficient source of EPA and DHA.

Practical tips for your everyday life

Integrating a good intake of Omega-3 into your daily routine is much easier than you might think. Often, even small adjustments make a huge difference.

Your goal should be to regularly and variedly incorporate omega-3-rich foods into your diet. It's not about being perfect every day, but about establishing a consistent, healthy habit.

Here are a few simple ideas you can implement immediately:

1. Start your day with power: Add a tablespoon of ground flaxseeds or chia seeds to your muesli, yogurt or smoothie.
2. Enhance your salads: Use walnut or flaxseed oil in your dressing and sprinkle a handful of walnuts on top. This adds great flavor and extra nutrients.
3. Include fish in your diet: Try to eat oily fish like salmon or mackerel once or twice a week . Whether fried, steamed, or canned – every form counts.
4. Snack smartly: A small portion of walnuts is an ideal, nutrient-rich snack for in between meals, which prevents cravings.

Although these tips are a great starting point, your individual needs may vary. You might be wondering if you have a deficiency despite eating a healthy diet. If you want to know how to easily check your current nutrient status, you'll find all the important information in our guide on testing for nutrient deficiencies .

When Omega-3 supplements are beneficial

A balanced diet should always be your first choice for supplying your body with valuable omega-3 fatty acids . But let's be honest: in everyday life, that's not always so easy to put into practice. Sometimes certain life circumstances or dietary habits get in the way. And that's precisely when high-quality supplements can provide excellent support.

This isn't about replacing a healthy diet. Rather, these supplements specifically fill gaps. For example, if you eat little or no fish – whether out of conviction, due to an allergy, or simply because you don't like the taste – then it becomes almost impossible to get enough of the important fatty acids EPA and DHA. The same applies during specific life phases such as pregnancy or for competitive athletes, when their needs suddenly increase dramatically.

When you should consider a supplement

There are many situations where a targeted supplement can truly make a difference. However, the decision should always be tailored to you and your life.

Here are a few typical cases where Omega-3 supplements are worth considering:

• For vegans and vegetarians: Those who abstain from fish primarily consume the plant-based omega-3 form ALA. The problem? The conversion to the active forms EPA and DHA is extremely inefficient. Algae oil offers an ingenious solution here – a direct, purely plant-based source.
• For people with fish allergies or aversions: Those who cannot or do not like to eat fish are missing out on by far the most important natural source of EPA and DHA. Supplements offer a simple alternative here.
• During pregnancy and breastfeeding: During this special time, the body needs large amounts of DHA for the child's brain development. Supplementation is often recommended to ensure optimal supply for both mother and child.
• For athletes and very active people: Those who train a lot put their bodies under stress. Omega-3 fatty acids can help regulate inflammatory responses and accelerate regeneration after exercise.
• In old age: Nutrient absorption can decrease somewhat with age. However, an adequate supply of omega-3 fatty acids remains crucial for mental fitness and a healthy heart.

What you need to consider when making your selection

When choosing a supplement, quality is paramount. The market is huge and often confusing. But don't worry, with a few simple criteria you can quickly find a good product.

Pay particular attention to these points:

• The source: Choose what suits you best. Fish oil is the classic. Krill oil is considered particularly bioavailable. And algae oil is the perfect vegan alternative.
• The EPA and DHA content: Don't be fooled by the total amount of Omega-3. What matters is how much of the active forms EPA and DHA are actually contained in each capsule. That's where the real benefit lies.
• Purity and freshness: Good products are purified of contaminants such as heavy metals. A low TOTOX value is an excellent indicator of the oil's freshness – and ensures that it doesn't taste rancid.

Finding the right balance is crucial.

More isn't always better. This is especially true for omega-3 fatty acids . An overdose can have undesirable side effects, such as affecting blood clotting. It's therefore extremely important to find a healthy balance and stick to the recommended dosages.

An official warning underscores this: In November 2023, the Drug Commission of the German Pharmacists (AMK) pointed out that very high doses of omega-3 fatty acids can increase the risk of atrial fibrillation in people with existing cardiovascular disease. This dose-dependent warning demonstrates the importance of taking conscious amounts tailored to individual needs. You can find more details in the AMK's communications .

Your individual needs are the benchmark. The goal is to ensure optimal supply without overdosing.

And this is precisely where your genetics can play a fascinating role. Whether your body is prone to inflammation or has a particular need for protective nutrients is also encoded in your DNA. The skincare DNA metabolic analysis from mybody-x, for example, can show you whether your skin could genetically benefit from a targeted supply of anti-inflammatory fatty acids. This allows you to develop a strategy that truly suits you.

How your genes influence your skin's needs

Omega-3 fatty acids are no longer a secret when it comes to a healthy heart or a sharp brain. But did you know they're also true superheroes for your skin? They work from within, strengthening the skin's natural protective barrier, retaining moisture, and can help manage inflammatory skin conditions like acne, rosacea, or eczema. But—and this is the crucial point—a blanket recommendation will only get you so far.

What works wonders for one person has little effect on another. The reason lies deep within us: in our unique genetic makeup. Your genes are your body's personal blueprint and significantly determine how your skin reacts to nutrients like Omega-3.

Your genetic code for skin health

Each of us is unique, and this is especially true for our skin. This is precisely where the science of nutrigenetics comes in. It deciphers the fascinating interplay between our diet and our genes and helps us understand why some people are naturally prone to dry skin, while others constantly struggle with blemishes.

Think of your DNA as a manual for your body. It contains invaluable information about your skin's innate strengths and weaknesses. If you can read this manual, you can perfectly tailor your skincare and nutrition to it—far more effectively than with any superficial cream.

Where exactly do your genes play a role in your skin health? Here are the most important areas:

• Moisture regulation: Your genes determine how efficiently your skin can retain moisture. A predisposition to a weaker skin barrier often means that your skin dries out more quickly and reacts more sensitively to external stressors.
• Collagen breakdown: Collagen is the protein that gives your skin firmness and elasticity. However, certain genetic variations can cause your body to break down this supporting structure more quickly, visibly accelerating the aging process.
• Tendency towards inflammation: Your immune system follows a genetic program. If it tends towards stronger inflammatory reactions, this can manifest as skin problems such as acne or eczema. This is precisely where omega-3 fatty acids come into play as natural anti-inflammatories.
• Antioxidant protection: Free radicals from UV radiation and environmental toxins attack your skin cells. How well your body's own protective shield works against them is also determined by your genes.

These genetic factors are not an unchangeable fate. Rather, they are signposts that show you where you can start to specifically support your skin.

From genetic analysis to personalized skin strategy

This is precisely where our Skincare DNA Metabolic Analysis from mybody-x comes in. Instead of groping in the dark with general advice, you gain a crystal-clear insight into the needs that are firmly anchored in your DNA. The test shows you precisely whether you are genetically predisposed to dry skin, accelerated collagen breakdown, or an increased tendency towards inflammation.

Imagine your analysis reveals that your genes predispose you to silent inflammation in your body. Suddenly, the importance of an adequate supply of omega-3 fatty acids becomes much clearer. You now know that you're not just doing something good for yourself, but specifically addressing a genetic predisposition.

However, the test might also show that your body naturally has a more permeable skin barrier. In this case, omega-3 not only helps against inflammation but also strengthens your skin's lipid structure from within, thus preventing moisture loss.

This transforms a simple dietary recommendation into a highly effective, personalized strategy for your skin. You consciously adjust your omega-3 intake—whether through more fatty fish, flaxseeds, or targeted supplements—because you now know exactly why it's so crucial for you. This is the key to unlocking your skin's full potential and giving it precisely what it needs.

Everything you always wanted to know about Omega-3

Finally, we'll address the typical questions we frequently receive about omega-3 fatty acids . This way, you'll be fully informed and can easily dispel any remaining uncertainties.

Can I meet my Omega-3 needs with purely plant-based foods?

Yes, it's possible, but it requires a bit of planning. Plant-based sources like flaxseeds, chia seeds, or walnuts are great, but they primarily provide the omega-3 fatty acid ALA. Your body first has to convert this into the readily usable forms EPA and DHA – and this process is unfortunately often anything but efficient.

If you want to be absolutely sure, microalgae-based algae oil is the best direct plant-based source of EPA and DHA. It's the ideal supplement for a vegan or vegetarian diet and ensures you're getting optimal levels.

How quickly will I notice the effects of Omega-3 capsules?

The effects of omega-3 are not a sprint, but rather a marathon. It's not a painkiller that works in 30 minutes. Instead, it's about improving the fatty acid balance in your cell membranes in the long term and gradually reducing silent inflammation in the body.

You might notice initial positive effects, perhaps on your mood or concentration, after just a few weeks. However, to achieve truly profound changes in your cardiovascular system or in chronic inflammatory processes, you should expect to take it regularly for several months . Patience pays off here!

Fish oil or algae oil – what is the difference?

Both provide you with the valuable fatty acids EPA and DHA, which is the main thing. The crucial difference lies in their origin: Fish oil, as the name suggests, is extracted from fatty fish. Algae oil, on the other hand, is produced directly from microalgae – from the original source from which fish also obtain their omega-3.

Algae oil is therefore the perfect vegan and sustainable alternative. High-quality algae oil is just as effective as fish oil and has the advantage of being free of potential pollutants from the sea.

Are there any side effects I should be aware of?

Omega-3 fatty acids are generally very well tolerated. Only very high doses can occasionally cause mild gastrointestinal discomfort or a fishy aftertaste. As mentioned previously, excessive intake can also affect blood clotting.

Important: Simply stick to the recommended dosages. If you have pre-existing medical conditions or are taking blood-thinning medication, it's best to briefly discuss taking it with your doctor. A balanced intake is key to success.

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Your genes play a role in how your body processes nutrients and what your skin truly needs. With the mybody-x Skincare DNA metabolic analysis, you gain in-depth, personalized insights. This allows you to tailor your diet and promote radiant skin health from within.